Daily Devotional

One feature of the Hebrew or Greek that your translation cannot easily show you — and where it leads.

Biblical discourse analysis,with the evidence attached.

Ask one question. The right tool is chosen for you — reading, structure, or a full discourse analysis that shows its working.

Or jump straight to a tool: Library · Search · Read · Structures · Exegesis · Research · Prepare Lesson · Prepare Sermon · Prepare Devotional

Welcome to TheophilusBible

Or begin here
39 + 27
Books annotated
13
Analytical lenses
16
Interface languages
$0.0000
Cost per structure

Library

Structural analysis

Chiasm and parallelism candidates, screened by rarity-weighted lemma overlap and calibrated with a permutation test. Candidates are leads for the exegete, not verdicts. "All types" scans for every pattern at once — narrow to one kind only if you already know what you're looking for.

From to

Sentence diagrams

Every Hebrew and Greek sentence, diagrammed from one syntax tree at three depths: the flow of its clauses, the role of each part, and a full line diagram. Hover a word to find it in every view; the lines drawn by the source and the lines drawn by us are named below.

Where these lines come from

Eclectic discourse analysis

Runs the eclectic-discourse-analysis method over the passage's token-level data using your own AI provider account — the key is read from an environment variable on the machine running the backend and is never stored here. A full chapter analysis typically takes one to several minutes.

From to

Pick an angle

Each of these is a focus question written and tuned for this method, so a request buys a specific analysis rather than a general one. Pick one, or leave them all unselected and just ask your own question below.

Reference library

Upload a commentary, article, or your own notes (PDF, .txt, or .md). Check the ones to include as secondary support — the analysis will cite them separately from claims anchored to the passage data.

    Search the web

    Neural/semantic search (via Exa), biased toward scholarly and dependable sites by default. Results are candidates only — nothing is fetched or added to your Reference library until you check the ones you want and click Import. Open a result's link yourself to verify it before importing; the app does not vouch for a page's reliability beyond the scholarly-domain search bias below.

    Exa web search setup (needed on the hosted site)

    Web search runs on your own Exa account — the key is read per request from your saved credential and is never shared with other users. Get a free key at dashboard.exa.ai.

      Manage your AI credits from My Profile. Save this analysis to My Library once it's done.

      Read

      Just want help understanding a passage right now? Pick a passage, ask a question if you have one, and get a short, plain-language explanation — no project, no setup, no research workflow.

      From to

      Ask and study with Theophilus

      Name a passage to open it on the board, or ask anything about Scripture.

      Opening, reading and marking a passage are free. Questions use AI credits; you see the price before the first one.

      Guided Study

      Read a passage slowly and mark what you notice, the way inductive Bible study marks a printed page. Every mark is saved as you make it, in order.

      My studies

        Start a new study

        From to
        Would you like to read in the original or in English today?

        Share this study

        Anyone with the link can read this study, including its notes and saved answers, without signing in. They cannot change it; signed in, they can save a copy of their own.

        Original-language vocabulary

        Save Hebrew, Aramaic, and Greek words in context. Glosses are learning aids, not exhaustive definitions.

        Review due cards

        No cards are due.

        Add from a passage

          Your vocabulary

          Export CSV

            Research workspace

            Local research projects following the Theophilus Method — Observe → Analyze → Interpret → Correlate → Evaluate → Synthesize → Communicate → Apply → Transform. Every claim carries its evidence, or a visible "unevidenced" badge. A project can also draw on a literature review, a research-gap finder, an AI Research Supervisor self-critique pass, and eleven competing interpretive views — each optional, none required to get a useful draft.

            From to

              Shared with me

              Projects another user has shared with you. You can view and comment; only the owner can edit.

                My Commentary

                Every claim you've approved with "Add to My Commentary" (from any Research project), assembled into a single reading view — your own words, verbatim, grouped by the verses they're about. Works whether or not you're signed in; nothing here is AI-generated.

                Books

                  Browse a chapter

                  Commentary

                  Compare & Correlate

                  Biblical things set side by side, with every cell citing the verse it comes from. Each entry says who makes the connection: the arithmetic over numbers the texts state, a word the corpus finds them sharing, a later verse that makes the link, or a named tradition that reads them together. Only the third kind draws an arrow.

                  Sky

                  The canon as an orrery of chapters and the vocabulary as two galaxies of words, drawn from rows already in the store. Nothing here is generated: a star's size is its tokens, its brightness a measured share, and a thread is rare vocabulary two chapters share.

                  Hebrew · brightness = mainline share Greek · no discourse annotation size = tokens thread = shared rare words ring = your claims arrow keys move between chapters · Enter opens one drag to pan · two fingers to move · scroll to zoom · double-click to reset

                  Research Graph

                  A map of how your own claims connect to verses, shared vocabulary, and sources — built entirely from data you've already recorded. Nothing here is inferred or generated; every line traces to a real claim, a real verse, or a real citation.

                  Explore from a verse

                  Explore from a node key

                  Paste a node key directly — e.g. claim:5, lemma:הלך, or source:smith2020 — or use the "View in Graph" link on any claim in Research.

                  Prepare a Small Group Lesson

                  Pick a topic or a passage. TheophilusBible runs it through the Theophilus Method behind the scenes and hands you a ready-to-teach lesson — background, a modern picture of the text, discussion questions aimed at real life-sharing, and one clear thing to do this week.

                  Age group adapts examples, life applications, tone, and developmental concerns. Content level adapts language, conceptual complexity, assumed knowledge, and theological depth.

                  The passage's own thrust always comes first — this only shapes emphasis, illustrations, and application where the text genuinely supports it.

                  Search the web

                  Neural/semantic search (via Exa), biased toward scholarly and dependable sites by default.

                    Prepare a Sermon

                    Pick a topic or a passage. TheophilusBible runs it through the Theophilus Method behind the scenes and hands you a ready-to-preach sermon — background, a modern picture of the text, and practical steps tied to what the text actually warrants. Bracketed prompts mark where your own story or a shared illustration fits; nothing personal is ever invented for you.

                    Age group adapts examples, life applications, tone, and developmental concerns. Content level adapts language, conceptual complexity, assumed knowledge, and theological depth.

                    The passage's own thrust always comes first — this only shapes emphasis, illustrations, and application where the text genuinely supports it.

                    Who is in the room

                    Optional. The sermon keeps one thrust; these are the lives it lands in. No group is ever named aloud — the sermon describes the situation and lets the person recognise themselves.

                    Search the web

                    Neural/semantic search (via Exa), biased toward scholarly and dependable sites by default.

                      Prepare a Devotional

                      Pick a topic or a passage. TheophilusBible runs it through the Theophilus Method behind the scenes and hands you a short, ready-to-share devotional — background, a modern picture of the text, a short reflection, and one clear thing to do today. A quick read, not a full lesson or sermon.

                      Age group adapts examples, life applications, tone, and developmental concerns. Content level adapts language, conceptual complexity, assumed knowledge, and theological depth.

                      The passage's own thrust always comes first — this only shapes emphasis, illustrations, and application where the text genuinely supports it.

                      Search the web

                      Neural/semantic search (via Exa), biased toward scholarly and dependable sites by default.

                        Evaluate a Sermon

                        Upload or paste a sermon and get a structured, evidence-backed reading of it: where its argument carries and where it stops, what it claims about the Hebrew or Greek (checked against the tagged text), and which passages read as though they may not be yours. No score, and no ranking against anyone else.

                        What this assesses — and what it won't

                        Governs the evaluation's own prose — its notes, suggestions, and comparisons. Verbatim quotations from your sermon always stay in whatever language you wrote it in.

                        Only projects you've already generated with Prepare a Sermon appear here. Leave on "Auto" to reuse whichever one exactly matches this passage, if any.

                        — or paste the text —

                        Audio and video aren't supported yet — the written sermon only. Your file is read once and then discarded; only the text is kept.

                        Your sermons

                        Preach a Series

                        Plan a run of sessions on one topic or through one passage — anywhere from a two-part mini-series to a year through a whole book. Define the series once, review (and adjust) how it divides into sessions, then generate each session's full sermon, workshop, or devotional one at a time. Every session runs the same Theophilus Method the single-session wizards do, so each one costs its own AI credits and a few minutes — spent only when you click Generate on that particular session, never all at once.

                        Your series

                        My Library

                        Everything you've saved from Read, Exegesis, Structures, and Search — organize it into folders, copy or download any item as Markdown, or delete what you no longer need.

                        Folders

                          All items

                            My Profile

                            Help

                            A quick tour of each tab, with a concrete example to try. Everything here works with the sample text visible on screen — nothing to set up first except where noted. Tip: if you type a question into a tab that isn't the best fit for it (e.g. a topic question typed into Read), the Service will offer to switch you to a better-suited tab — you can always dismiss the suggestion and stay put.

                            Start here

                            How to use this app

                            TheophilusBible is for reading Scripture closely — in English or in the Hebrew and Greek — and for turning what you find into teaching. You do not need an account to read, mark or lay out a passage; you need one to keep projects and to use the AI, which is paid for with credits and always shows its price first.

                            Finding your way. The menu on the left is grouped by what you are doing: Explore & Read (the text, its structures and its words), Ministry Preparation (lessons, sermons, devotionals, evaluating a sermon), Academic Research (projects, your commentary, the research graph) and Account & System. Rest the pointer on any menu item (or move to it with the Tab key) and a bubble says what that tab is for. On a phone the menu is behind the ☰ button, and every tab has its own entry below.

                            A good first hour — from a passage to something you can teach:

                            1. Open a passage. In Ask & Study, type Ruth 1. It opens on the board. Tell Theophilus what you are preparing — a sermon, a small-group lesson, a devotion — and he will point you the right way.
                            2. Read it slowly and mark it. Choose an entry from the legend (God, a place, a repeated word…) and drag across words. Use Lay out to put each clause on its own line.
                            3. Let the data show you more, free. The buttons under the chat ask the board for a chiasm, lay the text out, light repeated words or words that share a field of meaning, mark textual variants (New Testament), or read the passage aloud. Everything Theophilus adds is labelled with where it came from and undone in one tap.
                            4. Write what you see. In the guide beside the text, answer the three questions for a verse at a time: what does it say (Observe), what did it mean (Interpret), what does it ask of me (Apply).
                            5. Find it yourself first. Guide me is on to begin with: Theophilus asks what you notice before he shows anything, then compares. Press it to turn it off.
                            6. Ask when you are stuck. A question in the chat is answered about the passage on the board, from this site's own data, with the price shown before the first one.
                            7. Make something. Make… at the top of Ask & Study turns your study into a sermon, a lesson, a devotional, a video script or slides. It is built on your interpretation, so write at least one first.

                            Studying with others. Share or send (under More in a study) can make a read-only link, or, under Study it together, put friends on the same study with you as editors or viewers, each person's work named.

                            Other ways in. Home answers a quick question and sends anything bigger to the right tool. Library reads any chapter with glosses and audio. The Prepare tabs go straight from a topic or passage to a finished piece. Research is for long projects with evidence and sources.

                            Your language. Pick the interface language at the top of the menu. The AI can write in your language too; choose it where a tab offers Output language.

                            Stuck, or found something wrong? Contact us in the menu reaches a person, and the round button in the corner opens a guide that can answer questions about the site itself.

                            Ask & Study

                            One page: a chat with Theophilus on top, and Guided Study's board beneath it. Type a passage — Ruth 1, Malachi 3:6–12, 1 Cor 13 — and it opens on the board, where you can mark words, lay out the lines, connect and draw exactly as in Guided Study. Opening, reading, marking, laying out and the data cards are free, and need no account: without one, your board is kept in this browser.

                            Asking costs credits, and you see the price first. The first time you ask a question, a card says roughly what a question costs before anything is sent. Without an account it asks you to sign in; if you have no free requests or credits left, it offers to buy some. Either way your question is kept, and when you come back — from signing in, or from the payment page — it is sent for you. With a passage on the board, the question is asked about that passage and the answer is saved in your study.

                            Signing in keeps your work. Everything you marked before signing in moves into your account at sign-in, checked mark by mark; if any could not be kept, the chat says how many. Sharing, sending, slides and groups need an account, so they appear once you sign in. Your credit balance is shown at the top of the page.

                            Ask the board to do things. Type Is there a chiasm here?, lay it out, highlight the repeated words, connect the repeated words or switch to the BSB. These are free: the structure detector and the word counts answer, not the AI. A structure is drawn only when the detector found one in your passage, with its score; otherwise Theophilus says it found none. Everything he adds is marked Theophilus in Your marks (hover for why), and one tap of Undo in the chat takes it all back. If you already laid the passage out yourself, he asks before replacing it, and Undo gives your layout back exactly.

                            Also free: show the semantic domains lights words that share a field of meaning (in the original, or the BSB, which is aligned to it); group 1:3-5 as Loss brackets those verses under your label; note on 1:1: the famine is why they left writes your note on the verse (or note: … for the verse the guide is on). Anything else you ask the board to do — colour the words about going and returning — is read by the AI, priced like a question, and the AI may only pick one of these same actions, with the same rules and the same Undo. On a phone the chat is the first tab of the panel at the bottom of the screen.

                            The buttons under the chat do the same free things without typing, in whatever language the site is in: Is there a chiasm?, Lay it out, Repeated words, Fields of meaning, Textual variants, Old Testament in the New and Listen.

                            • A whole book: type just its name (Ruth, the book of Romans) to see its chapters and Bullinger's outline. Choose a chapter or a section to open it on the board; a tick marks a chapter you have studied, and choosing it reopens that study, so a book studied over several weeks stays together.
                            • Old Testament in the New: a note on each verse that is cross-referenced to the other testament — the Old Testament behind a New Testament verse, or where the New takes up an Old one — with buttons in the chat that open each on the board (Malachi 3:1 → Mark 1:2). They come from OpenBible.info's cross-references, ranked by readers' votes; not every one is a quotation, and the note says so. You can also type where is this quoted?.
                            • Textual variants (New Testament): a wavy red underline where the printed Greek editions differ, with a note on the verse saying what each one prints — the SBL Greek New Testament, Westcott–Hort, Tregelles, Nestle–Aland 28 and the Robinson–Pierpont Byzantine text. These are editions, not manuscripts; places where only the Byzantine edition differs are counted rather than drawn. You can also type show the textual variants.
                            • Listen reads the passage aloud from the same recordings Library plays, naming the voice; a synthetic one is said to be synthetic. Press it again to stop. Not every passage is recorded yet.
                            • Verse numbers. Where English numbers verses differently from the Hebrew or Greek — Malachi 4 is Hebrew Malachi 3:19–24, and a psalm's title is the Hebrew's verse 1 — Theophilus says so when the passage opens, so the original on the board does not seem to lose verses.

                            Guide me. Guide me, at the top of the page, is on until you turn it off: before Theophilus shows a structure, the repeated words or the fields of meaning, he first asks what you notice. Type your answer: it is saved as your own observation, then the board shows what the data finds and sets it beside what you said — which verse pairs you also saw, which repeated words you spotted. Just show me skips the question for that one time; press Guide me to turn it off (it stays off on this device until you turn it on again). No AI is used for any of this.

                            Choosing A small-group lesson also offers Invite your group, which opens Study it together for the study on the board (signed in), so the group can mark and comment on it with you.

                            What are you preparing? The welcome asks: a sermon, a small-group lesson, a devotion, or just exploring. Your answer is remembered on this device and puts that output first in Make….

                            Make… (signed in) turns your study into something you can use. It makes the study a Research project whose stages are your own observations, interpretations and applications — nothing Theophilus or the AI wrote — and opens it with the engine you chose selected; press Generate there, and you see the price first. A study with no interpretation yet is refused, because a sermon is built on what the text means, not on the passage alone. A video script is written from the lesson, so make the lesson first. Slides of this study downloads the replay of your study as a deck, free.

                            Try: type Ruth 1:1-5, mark "Bethlehem-judah" as a Place, then type highlight the repeated words, or ask Who were the Moabites? Or type Mark 1:1-8 and press Textual variants.

                            Ask TheophilusBible (the guide)

                            The button in the bottom-right corner opens a guide you can talk to. Ask it about the text — "where does chesed appear?", "what's today's devotional?", "is there a chiasm in Jonah 2?" — or about the site itself: what's free, what needs an account, where a particular tool lives. When there's a screen that answers your question better, it offers a link; it never moves you without you clicking.

                            You can type or use the microphone, and the speaker button reads replies back to you. Both use your browser's own speech features, so nothing is recorded or uploaded.

                            Hold the space bar to talk. With the guide open and your cursor out of the text box, hold space, say your question, and let go — it sends when you release. There is no wake word and there will not be one: nothing listens without a finger on a key.

                            The guide knows which screen you are on and what you have selected there, so on the Sky you can ask "what is this?" or "what else shares words with this?" about the star you have open. It can fly you to a chapter — ask for Ruth 2 and it offers the trip; you take it. What it still cannot do is act for you: it has no tool to sign you in, change a setting, or alter anything you own.

                            Ask what a Hebrew or Greek word or grammatical term means and it looks the answer up in cached BDB (Hebrew) and Abbott-Smith (Greek) lexicon entries or the grammar glossary, and cites the source — e.g. (BDB p. 224) or (Abbott-Smith, s.v. G26) — rather than defining it from memory. If nothing is cached for that word, it says so plainly instead of guessing. Check "Allow web search for this question" below the chat log to let it search the open web (via your own saved Exa key) for that one question — results are always labeled web-sourced and less certain, never blended into a cited lexicon answer.

                            Try: ask "what can I do here without signing in?", or "what does chesed mean?"

                            What it will not do. It can look things up and point the way, and that is all. It cannot sign you in, change a setting, start or delete a project, or buy anything — those tools don't exist for it to use. It will never ask for a password, an API key, or card details, and you should never type one into it. Signing in happens on the sign-in screen, in your browser, where the guide never sees what you type.

                            Daily Devotional

                            A new entry every day, built on one feature of the Hebrew or Greek that English translation cannot easily carry — an infinitive absolute doubling a verb against itself, a Greek middle voice, a word used once in the whole canon. Each entry moves from that observation to worship and ends with one concrete thing to do.

                            No account needed, and nothing to generate — the day's entry is already written. Open "The words behind this" at the foot of an entry to see the exact words and morphology the observation rests on, and click the reference to read the whole chapter in Library.

                            Try: read today's entry, then click Browse past devotionals to work back through the archive. Every day has its own link you can share or bookmark.

                            Where the entries come from: a deterministic sweep over this site's tagged corpus finds verses that genuinely carry a checkable feature, and the writing is built around that specific finding rather than a free-ranging search for something interesting. Entries are reviewed and approved by a human before anyone sees them.

                            They also wait at the verse. Every published entry appears in Commentary beneath the verse it was written about, collapsed, however long ago it was published — so a devotional you never saw on its day is still there when you come to the passage. Untick Devotional in the layer toggles to hide them.

                            Home

                            One box, no need to pick a tab first — type anything and the Service figures out where it belongs. A bare topical or theological question ("what about predestination?", "were there dinosaurs in the Bible?") gets a quick answer right there on Home, with the most directly relevant passages listed underneath — nothing is saved and no project is created. A question anchored to a specific passage goes to Read; wanting to build or start something goes to Research or a Prepare wizard.

                            Try: type "what about predestination?" and watch the answer appear inline, disputed views named on both sides.

                            If the question names a specific Hebrew/Greek word or passage, the answer is grounded in cached lexicon and corpus data first — a "Grounded in: ..." line lists what it cited, and it says so plainly rather than guessing when nothing is cached. The checkbox next to the provider dropdown opts that one question into an open-web search too (via your own saved Exa key), always shown as a separate, clearly-labeled "less certain" section.

                            The greyed-out example text in the box is a real suggestion, not just a hint — with the box empty, press the right-arrow key to fill it straight in (same idea as a terminal's command autosuggestion), then edit or submit as usual.

                            When you are signed in, a Recent work panel appears above the box listing what you have generated lately. Generation does not stop when you close the tab — an Exegesis or Read request finishes on the server whether or not the page is still open — so this is where to look for something you walked away from. Anything still running says so, and you can safely close the tab again. Finished Exegesis and Read results open in place; drafts that belong to a project or a sermon send you to that tab, where they were saved.

                            To clear the list, tick the boxes beside the entries you are finished with and use Remove Selected, or Remove All to empty it. Removing an entry removes the record of the job, not anything you saved from it — a draft already sent to your Library or a project stays exactly where it is.

                            Try: start an Exegesis, close the tab, then come back to Home a minute later.

                            Reading the text

                            Diagram

                            Every sentence of the Hebrew Bible and the Greek New Testament, diagrammed. Pick a book and chapter, then choose a depth:

                            1. Flow puts each clause on its own line, indented under the clause it depends on, with its joining word ("that", "because", "in order that") in front and a label saying what it does. Read down the left edge for the main line of thought.
                            2. Clause marks each part by its role — subject, verb, object, complement, adverbial — and reads out each clause's kernel: who does what.
                            3. Line draws one sentence as a Reed–Kellogg diagram: the kernel on a baseline, every other word hanging beneath the word it modifies. Hebrew is drawn right to left. Download SVG saves it for a handout or slide.

                            A diagram is drawn for a whole sentence, not a verse, so a chapter can begin with a sentence that started in the chapter before. Hover any word to see it in every depth, with its gloss, lemma and parsing.

                            The syntax trees are the MACULA Hebrew and Greek datasets (CC BY 4.0). A few things are ours rather than theirs, and each is listed under Where these lines come from: names such as "purpose" or "reason" are suggestions from the joining word, not findings, and a word the sentence leaves unstated is shown as (X), never supplied.

                            Guided Study

                            Read a passage slowly and mark what you notice, the way inductive Bible study marks a printed page. Start a study by choosing a passage and whether to read it in English (Rotherham's Emphasized Bible, the Berean Standard Bible, Young's Literal Translation or the King James Version, all free to use) or in the original Hebrew or Greek. In the original you choose how much help to see: the text alone, or with transliteration, an English gloss under each word, and parsing. You can switch texts at any time; marks made in each text are kept separately.

                            Marking. Pick an entry from the legend (God, a key or repeated word, a contrast, a time, a place, a command, a promise…), then drag across the words with a mouse or pencil. On a phone or tablet, tap the first word and then the last. Every entry can be renamed and restyled, and you can add your own. Format freely gives any mix of highlight, bold, underline (single, double, wavy or dashed), box, circle and symbol in any colour. Add a note attaches a short note to the words you select. With a keyboard, the arrow keys move through the words and Enter marks.

                            Colour. In the Hebrew or Greek, Colour paints each word by its part of speech, or colours just the verbs: in Hebrew by where they stand in the storyline (main line, secondary, background, setting), in Greek by how prominent their tense form makes them. The colours are the ones the Exegesis tab uses, and a small key under the bar names the ones on screen. The storyline comes from automated tagging, and the key says so. Your marks draw over the colours, so you can use both at once. Reading the Berean Standard Bible, Colour paints the English too: each word takes the colour of the Hebrew or Greek word it translates, as matched word by word by people at Clear Bible — a word nobody matched stays plain. Original beside sets the Hebrew or Greek under each verse; point at an English word, or tap a word of the original, to see which words translate which.

                            Saved as you go. Guided Study needs an account: each mark is saved to it the moment you make it, in order, so a study is never lost with a browser's cache and opens where you left off on any device. The Your marks tab lists your marks in the order you made them: tap one's reference to see its words lit up in the passage, remove any of them, or undo the last (Ctrl+Z, or ⌘Z on a Mac). No AI is used, so studying costs no credits.

                            Room to read. The passage takes the page; the controls sit in one bar above it. Mark, Lay out and Draw switch what a tap or a drag does, and the legend shows only while marking. A− and A+ set the size of the text, and Focus puts the site menu away while you study; both are remembered on this device. On a wide screen the guide sits beside the passage; on a phone or a tablet held upright it waits in a tab at the bottom of the screen — tap Guide to open it and tap again to put it away. Downloading slides, other versions and deleting the study are under More. So is Print a handout: the passage as it stands on the page — laid out if you laid it out, with the layers you have on — and ruled room to write under every line, for a group or a class. Choose Save as PDF in the print dialog for a file.

                            Guide me verse by verse. The guide takes one verse at a time and asks what you notice; what you write is saved against that verse. Want more? opens the next layer of what the data holds, free: the words (gloss, transliteration, dictionary form, parsing), the grammar of the verbs, the clauses, how they connect (main line or background, the relation and the connecting word), and the words the passage repeats. Word study beside a word opens its dictionary entry, how often it stands in the passage, the book and the Bible (and in which verses of this book), and the other words UBS files in the same field of meaning — free. How the Septuagint renders a Hebrew word is not shown yet, and it says so. I'm tired, just give me the information opens every layer at once. The discourse layer comes from automated tagging and says so. The two buttons marked AI credits — a response to what you noticed, and a written summary of the verse or passage — are paid, and each answer is saved into your study. So is Ask a question about this passage, folded away at the foot of the guide.

                            Observe, interpret, apply. The guide follows the three questions of inductive study. Observe asks what you notice; Interpret asks what the verse meant to its first hearers; Apply asks what it asks of you. Each is saved against the verse under its own name, and the paid response reads it for that stage — testing an interpretation against the grammar and context, or keeping an application to what the passage itself says.

                            Other languages. Besides English, a study can be read and marked in the Reina-Valera 1909 (Spanish), the Louis Segond 1910 (French), the Luther Bible 1912 (German), the Statenvertaling (Dutch), Ang Biblia 1905 (Tagalog) and the Chinese Union Version (1919, simplified characters) — all free to use. Choose them from Other languages, next to the English texts. Chinese is written without spaces, so its words were divided once, when the text was added; a division can occasionally be wrong, but it never changes, so your marks stay where you put them.

                            Other versions. Copyrighted translations such as the NIV or ESV cannot be copied into the app. Read this passage in another version, under More, opens the verse you are on in YouVersion or Blue Letter Bible, where their publishers license them; your marks stay here, on the texts the study can show.

                            Lay out the lines. Set the passage out the way a poem or a sequenced list is printed. Choose a phrase — drag across it, or tap its first word and then its last — and press Start a new line here to bring it down to a line of its own start, or Put it on its own line to break the line after it too. You can also tap between two words to start a new line there, and the ↑ beside a line joins it back to the one above. Tap lines in their left margin to select them, then indent them, tag how each relates to what it hangs on (purpose, reason, result, contrast, series, parallel…), or bracket them into a labelled group. Compare shows how the Hebrew or Greek itself divides and indents the same verses, with the same relation names, so you can read your layout against it. Below that it shows Bullinger's structure from The Companion Bible (1909–1922): the lettered outline he set the passage in, with the part your passage falls in highlighted. Most outlines have not yet been checked against the printed book, and some letters were supplied by the editors rather than printed by Bullinger; Compare says so beside each one.

                            New to diagramming? In Lay out, Start with a default diagram sets the passage out for you as a first draft. Reading the Hebrew or Greek, it follows the clause analysis the Diagram tab draws; in a translation, it starts a line at each full stop, semicolon or colon, at a comma once a line has some length, and before words such as because, so that or although, indenting and tagging those clauses (reason, purpose, concession…). It is only a starting point: move, indent, retag or join any line. It never replaces a layout you have made without asking first, and Clear the layout takes every line break, indent, tag and bracket away at once while leaving your marks, notes and connectors.

                            Connect words and phrases. Connect draws a line from one word to another: drag from the first to the second, or tap one and then the other. Set Join to Phrase to phrase to connect whole phrases instead: choose the first phrase (drag across it, or tap its first and last word), then the second, and both are bracketed beneath their words. Choose beforehand what the line says — a relation such as purpose, reason or contrast, or a label of your own — and its colour, style and arrow. Every connector is listed under Connectors in this passage, where each can be given a different relation after it is drawn, or removed. Connectors stay with their words when you lay the passage out, change the text size or open the study on another device. In Lay out, choose lines and the line they hang on and press Attach: they are indented under it and joined to it, the way the Diagram tab draws one clause under another. Reading in the original, Compare offers Start my layout from this, which sets out your lines where the Hebrew or Greek's own clauses begin, ready for you to change. Slides list your connectors on a slide of their own.

                            Ask a question. The guide also takes your own questions about the Bible, theology and church history, answered with the verse in view (AI credits). Answers start from the historic creeds most Christians share (the Apostles' and Nicene Creeds, with the Chalcedonian Definition of Christ as one person, fully God and fully man) and describe other traditions fairly; say how sure the history is; name the passages that bear on the question; and keep to their subject, pointing you elsewhere for anything else. If a question shows you are in distress, the answer will point you to your church and, where there is risk of harm, to emergency help. Every answer is saved in your study.

                            Apple Pencil and stylus. On an iPad, a foldable phone or any screen with a pen, stroke across words with the pencil to mark them with the chosen legend entry; the first pencil stroke switches the passage into pencil mode, so strokes mark rather than scroll, and a palm resting on the screen is ignored. Draw switches to ink: draw arrows between words, brackets across lines, or notes in the margin. Each stroke is saved as you lift the pencil and moves with the word it starts on when you lay the passage out differently.

                            Study with a group. Open the Group tab and choose Study this with a group, then send the link to the people you are studying with. Each person who opens it (signed in) gets their own copy of the study. As each one saves what they noticed, what it meant or what it asks of them, the Group tab shows it for that verse, so you can compare. Your marks, notes, lines and drawings stay yours — the group never sees them. The leader can make a new link (the old one stops working), remove someone or end the group; everyone keeps their own study. People are shown by their account name, never their email.

                            Download slides. Turns your study into a PowerPoint deck for teaching: the text, then one slide for each thing you marked with every mark so far on the words, your laid-out lines, what you noticed, and the legend. What you noticed and any AI responses go into the speaker notes. PowerPoint cannot draw a box or circle around words, so those appear as coloured brackets. If you drew with the pencil or connected words, an As drawn slide shows your strokes and connectors on the words they belong to. To make a PDF, open the deck in PowerPoint, Keynote or Google Slides and save it as PDF.

                            Share, send or delete. Share or send — beside each study in My studies, or under More inside one — makes a link to the study. Anyone who opens it can read the study, laid out as you left it, with its marks, notes and saved answers, without signing in; they cannot change it, and signed in they can Save a copy to my studies and carry on in a copy of their own. Copy the link, email it, or send it with another app; on a phone or tablet you can send the slides themselves. Stop sharing makes the link stop working for everyone. Delete study, in the list or under More, deletes a study and its link for good.

                            Study it together. Further down the same Share or send dialog, Study it together puts other people on this study rather than giving them a copy. Invite someone by their email as an editor (they mark, lay out and ask on the study with you) or a viewer (they read it and comment). The invite link is copied for you to send, and works only for the account with that email. To let anyone signed in join with a link instead, choose Anyone signed in with the link; switching back to Only people I invite stops every such link at once.

                            On a shared board every mark, note and answer is named with who made it, and what someone else adds appears on your page within a few seconds, without reloading. An editor can remove only their own work; you, the owner, can remove anything, take someone off the board, withdraw an invite, and hide a comment. Each person keeps their own view (which text, how much help) and pays for their own AI questions. What other people write is never treated as an instruction to the AI: it reaches it only marked as someone else's words, and comments never reach it at all. Make… uses only your own observations and interpretations. A board someone shared with you is listed in My studies as theirs, with Leave this board.

                            Layers and Replay. Layers, in the toolbar, chooses what the page draws: marks, notes and answers, lines and structure, connections, ink, and Theophilus's work — and on a shared board, each person. It only hides; nothing is deleted, and your choice is kept on this device. Replay shows the study as it stood after any step: drag the slider, or press Play to watch it build up in the order it was made (the same order the slides use). While replaying you cannot mark the page; Back to now returns to the study as it is. Both work on a shared link too. Commentary (sticky notes), off until you turn it on, adds the Commentary tab's notes on these verses as yellow notes under each verse, each with its confidence (high, moderate, low, disputed). They are written by AI, say so, and are never saved into your study, so they cannot be mistaken for what you noticed. Only commentary already written is shown; nothing is generated or charged. Discourse, also off until you turn it on, shows how the account is built: words off the main line (setting, background, comment) are lighter and slanted, a peak is boxed, and marked word order is overlined. It reads the corpus's own annotation, most of it automated and said to be so; in a translation it works through the BSB's alignment.

                            Try: start a study of Ruth 1:1–5 in Rotherham, choose "Place" in the legend and drag across "Bethlehem-judah". Then choose Lay out and Start with a default diagram.

                            Compare & Correlate

                            Curated comparisons: the tabernacle beside Solomon's house and the house Ezekiel is shown, drawn at one scale; two words that occur together in three verses of the whole Hebrew Bible; Exodus 12 beside the death of Jesus.

                            Every cell cites its verse, and each entry says who makes the connection — that is the part to read first. A measured entry compares numbers the texts state, and marks each one stated, derived (with the arithmetic printed) or unstated. A lexical entry is a word the passages share, with its count in the annotated corpus rather than the word "rare". An explicit entry is one a later verse makes, and that verse is printed on the arrow. An interpretive entry is a reading, named and labelled, and it never draws an arrow, because no verse makes the link.

                            Where the sources disagree — Kings against Chronicles on the porch's height, John against the Synoptics on the night of the Passover — both readings are shown and neither is resolved. Comparisons are free to read, and so is every verse they link to in Library.

                            Entries also appear beneath the passage itself in Library and Commentary, collapsed, with a line saying why that chapter summoned them.

                            Library

                            Browse and read the Hebrew/Greek text with English glosses.

                            1. Click a book card.
                            2. Pick a chapter from the chapter navigation.
                            3. Toggle "transliteration" if you want it shown alongside the original text.

                            Try: click Ruth, then chapter 1.

                            Click any Hebrew or Greek word for a popover with its lemma, gloss, and part of speech. Toggle flowing to read a chapter as continuous text with small verse numbers instead of one card per verse — handy for long chapters like Psalm 119. Toggle fluent translation (KJV) for a normal-English reading alongside the original; a small number of chapters (about 1 in 8, mostly in the Psalms and a few other Old Testament books) show a note instead, because the Hebrew and King James verse numbering genuinely differ there and showing mismatched text would be worse than not showing it. The current book/chapter is also reflected in the page URL, so you can bookmark or share a link straight to a passage.

                            Explore — the free reader

                            explore.theophilusbible.com is a second site, and a different thing from this one. It is a reader: Rotherham's Emphasized Bible (1902) laid out on the structures E. W. Bullinger drew for The Companion Bible, with the seam between one structural member and the next ruled through the text. No account needed, the whole Bible — as with this Library.

                            This Library is the other half: the annotated Hebrew and Greek corpus, with morphology, the syntax layout, search and commentary. The distinction is not English against the original languages — Explore shows the Hebrew and Greek too, from this very corpus, coloured by the same palette. The distinction is what you came to do. Read a book through, over there; ask a question of the text, here.

                            The Hebrew and Greek over there are free too, with no account. Click Original in Explore's toolbar to show them beneath the English. Rotherham and Bullinger are public domain; the Hebrew is derived from the ETCBC's BHSA, whose licence is non-commercial, so Explore shows it free for reading and credits it on the page, as this Library does on the Sources page.

                            The two are linked at the chapter. Read on Explore beside a chapter title in Library opens that same chapter in the reader, and Study in the reader's toolbar brings you back to it here. Explore also underlines the words a Daily Devotional touches and links back to the devotional on this site.

                            Timeline

                            A Section Through Sacred History is one chart read left to right, from Abram to the present. Five strata run its whole length: what Scripture records on top; beneath it the doctrines the church has argued over, each with the verses both sides argued from; then the kingdoms and rulers whose paths cross the biblical story; then the wider world's writing, thought and material remains; and a bedrock strip tracing peoples and empires as continuous threads.

                            1. Open Timeline in the sidebar. It is its own page and opens in a new tab, so anything running here keeps running. Back to TheophilusBible at the top of the chart returns you here, still signed in.
                            2. Jump with the era bar, or search for a person, place or text.
                            3. Click any entry for its photograph, its fuller note, and its links into Library and Commentary on this site.

                            The controls above the chart change what is on screen. Reading view puts the chart away and gives you the same entries as a plain outline to scroll top to bottom. Connections draws the dashed curves that tie a find to the passage it bears on. Pictures and Daylight turn the photographs off and the dark ground light. The zoom control widens or narrows the whole span.

                            The chart's own Key says how it settled its dates, and it is worth reading before arguing with one. Dates before the monarchy are approximate and contested; the regnal years of Israel and Judah follow Thiele's synchronisms; the exodus is plotted at the early date implied by 1 Kings 6:1, with the thirteenth-century alternative noted on the card itself; Genesis 1–11 opens the chart as a prologue, outside the measured scale; and a tilde marks any date scholarship still disputes. Distance along the chart is not time — each era is given room according to how much happens in it — so read the date on a card rather than the gap between two of them.

                            Try: search for Siloam, then follow the dashed curve from the inscription to Hezekiah's tunnel and open 2 Kings 20:20 from the card.

                            Syntax Layout

                            An indented view of a chapter that shows how its clauses hang together — each clause set at a depth matching how it depends on the one above it, rather than laid out one verse per line.

                            1. Open a chapter in Library.
                            2. Tick Syntax Layout.
                            3. Hover any relation badge to see what it means, or open the legend card below the text for all twelve at once.

                            The badges are the corpus's own clause-relation codes — Objc for a clause acting as an object, Coor for one joined by a conjunction, Adju for an adverbial modifier, and so on. Clauses whose relation the corpus does not record show no badge at all rather than a placeholder, so a gap means "not annotated", not "no relation".

                            This layout is read off the corpus annotation, not generated: no model is involved, and no interpretation of the passage has been applied to it. Like every annotation layer here it is open to correction — treat an odd-looking depth as a lead to check against the text, not as a verdict.

                            Try: Ruth 1 with Syntax Layout on, and follow the indentation through verses 8–18.

                            Commentary

                            An original-language commentary organised by pericope — the interpretive unit — rather than verse by verse. The Hebrew and Greek, the morphology and the colour coding are the same fixed corpus data Library and Exegesis read; only the prose around them is written.

                            1. Pick a book. Filter to Old Testament or New Testament if the grid is long.
                            2. Pick a pericope from the inventory. Each row says which method drew its boundaries and how much confidence that method earns.
                            3. Read. Use ← Previous and Next → to work through a book in order.

                            Try: Ruth, then the first pericope. Every book's commentary is free to read, with no account needed.

                            Where the units come from, and why they carry a confidence. A pericope boundary is somebody's interpretive decision, not a fact about the text, so the app never presents one as settled. Divisions are drawn deterministically from the corpus's own paragraph markers where those are the right grain, and from chapter units where they are not — the label on each unit says which. Open "How else could this book be divided?" under the inventory to see the alternatives, with a count of how many detected literary structures each one cuts across. A structure running through a boundary is evidence that the boundary is in the wrong place.

                            Every interpretive claim shows its grounds. Claims carry a confidence label, and Why? beside one opens the textual evidence it rests on and any alternative readings the writer considered. A claim that was given no supporting evidence says so rather than staying quiet about it. If you disagree, use I disagree or Not convinced — your stance and optional note sit beside the claim and never alter the prose. Checked marks one you have satisfied yourself about.

                            Layers at the top of a pericope turn parts of the reading on and off: Text, Translation, Structure, Vocabulary, Grammar, Modern Hebrew, Discourse, Textual and Commentary, plus Devotional for any daily devotional written on a verse in the passage. Turn off what you are not using and the page gets shorter.

                            The measured band above the verses is counted, not written — literary structures found in the passage, discourse analytics tabulated from the corpus's own annotation, and any figures the chapter summons. Each panel opens onto its working. Read it against the prose below rather than as a summary of it.

                            Click any Hebrew or Greek word for its lemma, gloss and morphology, the same popover Library gives you. Where the manuscripts disagree, the variant is marked in the text and the reading is set out with its sigla. Recorded passages get a play button per verse. Open in Library, Exegesis or Structures carries the same passage to those tabs.

                            Generating and correcting. A pericope with no commentary yet shows the corpus text and a Generate commentary button; the text itself is always there whether or not anything has been written about it. If one verse reads badly, Rewrite this verse redoes that verse alone rather than the whole unit — and you can say what should be different. Book-level orientation is generated separately from the book page.

                            Commentary prose is interpretation and is labelled as such at the top of every pericope, with the model and date that produced it. Weigh it as you would any commentary. The Hebrew and Greek are never generated.

                            Modern Hebrew — “how it would be said today”

                            On a Hebrew pericope, the measured band carries a collapsible panel listing the clauses where a subject-like word stands before the verb — and, where it has been generated, how the same thing would ordinarily be said in Modern Hebrew.

                            The modern sentence is not the point. The difference is. Hebrew narrative normally puts the verb first. When something else stands there instead, you cannot see that it is an unusual position without knowing the usual one — and Biblical Hebrew gives you no such baseline from inside itself, because every sentence in it is old. Modern Hebrew does. So the modern line is a control: read the two, see which word has moved.

                            1. Open a pericope in any Hebrew book in Commentary.
                            2. Make sure the Modern Hebrew layer is ticked.
                            3. Open How it would be said today in the measured band.

                            Two halves, and they are not the same kind of thing. Which clauses are subject-first, and which word stands first, is computed from the words themselves — so it is there on every Hebrew pericope whether or not anything has been written about the passage. The Modern Hebrew rendering is generated, and carries a confidence and the model that produced it. A clause showing the computed half but no rendering simply has not been generated yet — a fact about this site, not a finding about the Hebrew.

                            You never have to generate anything, and you are never charged for this. The renderings are produced once for the whole corpus and then read by everyone.

                            Why most verses have nothing. The ordinary backbone of Hebrew narrative — the long runs of wayyiqtol — is verb-first, so it never appears here. Neither do verbless or nominal clauses, which have no verb to stand before and therefore no order to observe. On a Greek pericope the panel never appears at all. Expect a handful of clauses in a chapter, not one per verse.

                            What it deliberately will not tell you. It says what moved. It does not say the word is emphatic, or that the order carries focus, topic or contrast. That restraint is not timidity: this corpus's own word-order annotation was tested against the text and could not support those conclusions, so asserting them here would be borrowing certainty that does not exist. The two lines are shown side by side and the inference is left to you — if you read Hebrew, you are better placed to draw it than the annotation is.

                            Word order in Biblical Hebrew is shaped by genre, clause type and particles as well as by information structure, so a word standing first is not automatically significant. The panel is a claim about Hebrew, not about theology. A sermon point that needs the word order to stand up does not yet stand up.

                            In Prepare a Sermon. The strongest of these travel into sermon preparation as grounding, so a point can show a hearer where the Hebrew puts a word. Only high or moderate confidence entries cross over, no more than four per passage, and the same restraint applies: show the difference, do not claim what it proves.

                            Try: Ruth, first pericope, with the Modern Hebrew layer on.

                            Search

                            Find every verse using a particular word or phrase.

                            1. Type a search term.
                            2. Scan the matching verses.
                            3. Click a result to jump to it in Read.

                            Try: search chesed to see every verse using that Hebrew word.

                            Read

                            A one-shot, plain-language explanation of a passage — no project or setup, just a quick answer.

                            1. Pick a passage.
                            2. Optionally type a specific question.
                            3. Click "Explain this."

                            Try: Ruth 1, question "Why does Naomi change her name?"

                            Vocabulary

                            Build a personal Hebrew/Aramaic/Greek flashcard deck from words you actually meet in your own reading, with spaced-repetition review (sign-in required).

                            1. Pick a passage and click "Show words" to see its tokens.
                            2. Click a word to add it to your deck.
                            3. In "Review due cards," each card shows the word with the verse you met it in, the word marked. Reveal the answer and rate yourself Again/Hard/Good/Easy — the schedule adjusts automatically. Beside it are your deck's counts and the cards coming up next.

                            Try: show words for Ruth 1:1, add "chesed" if it appears, then review it once you have a due card.

                            Sky

                            The whole corpus drawn as one picture: the canon as an orrery of chapters, the vocabulary as two galaxies of words, and your own claims ringed over the chapters they anchor to. Every mark is a row already in the store — a star's size is its token count, its brightness the share of its annotated tokens on the storyline mainline, and a thread is rare vocabulary two chapters share (the same markers the Bible Genome uses). Nothing is generated and nothing is simulated: the same corpus always draws the same sky.

                            1. Open the Sky tab. The first visit builds it from the corpus, which takes a moment; later visits are instant, and "Rebuild" redraws it if the corpus has changed.
                            2. Click a star to see the chapter's numbers, the chapters it shares rare words with, and any claims of yours anchored there. Drag to pan, scroll to zoom, double-click to reset.
                            3. Switch to Vocabulary for the two galaxies of words — colour is part of speech, brightness is frequency, and a word's place is which chapters it shares with other words, not what it means.
                            4. Switch to Names to light where a proper noun stands. Pick a second name and the chapters holding both light in a third colour — which is the only relation between two names this corpus supports. It says where a name occurs and never who or what it is: the tagging marks a proper noun and does not say whether it is a person, a place or God.
                            5. Switch to Structures to light the chapters carrying a chiasm or parallelism that passed a permutation test, brightest where the test is most confident. Click one and its figure is drawn: a chiasm folds so that every mirrored pair sits on one level rung and the arms converge on the centre, a parallelism stands as a ladder with the two panels side by side, and a staircase runs one step across and one down. The shape is the pairing the detector used, so the four kinds look different at a glance. A ring on a unit is marked word order in its verse — a second measurement in the same frame, not a claim that the two are connected.
                            6. Switch to Word and type a word — in Hebrew or Greek, or just its English gloss — to ask where it stands. Every chapter holding it lights, brighter where it occurs more often. Pick a book from the In box and those chapters take the accent colour, with the count inside the book set against the count everywhere else. Unlike the galaxy, which draws the 2,000 commonest words per language, this finds any word in the corpus, and tells you when the one you found has no star.
                            7. Type a second word in the with box to ask where the two stand together. The canon then wears the Names layer's three colours: the first word's chapters, the second's, and in a third colour the chapters holding both. The panel prints how many chapters each word reaches, how many they share, what share of each word's range that is, how many verses hold both — a much tighter fact than a shared chapter — and roughly how much overlap two words this frequent would have by chance. None of that is a claim that the two words are related: two words in one chapter is co-occurrence, and the panel says so beside the numbers.
                            8. Under Brightness, switch the word layer between occurrences and per 1,000 words. A long chapter has more room for any word, so a high count is partly a fact about the chapter's length; the second measure divides by the chapter's own size. It says how concentrated the word is there, which is not how much it matters.
                            9. Open Verses on any chapter in the list to see the verses the word actually stands in, and click one to open it in the reader with that verse marked. Copy these numbers puts the whole table on your clipboard — with the caveats, which travel with the figures rather than staying behind on the screen.
                            10. The address bar carries the question, so a finding can be shared: a word, a second word, the book you scoped to and the measure you chose all live in the link, and so does a lit name. Paste it into a handout and it opens on the same picture.
                            11. In Vocabulary, use Find a word to reach one star among thousands, and Hide words commoner than to take the top of the frequency range out of the picture. Filtered stars dim rather than disappear and nothing moves: a star's place is fixed by the data, so the same corpus always draws the same galaxy.
                            12. "As a list" is the same data as a table, for screen readers and for checking a number.
                            13. 3D turns the flat chart into a sky you can orbit — drag to turn it, scroll to zoom, arrow keys to steer, double-click to reframe. It draws exactly the same rows in the same places; what it adds is depth and travel between the two galaxies. On a laptop it is on to begin with, on a phone it is off and offered; either way your choice is remembered, and a browser that cannot draw it says so and keeps the chart.

                            What it refuses to draw, on purpose: Greek chapters have no discourse annotation, so no Greek star is brighter than another; no thread crosses the testaments, because no row in the store links them; and every Hebrew share is labelled heuristic · unreviewed, because that is what every annotated token in the corpus still is.

                            Structures refuses three more things, and each is a way a picture could mislead. A chapter the detector examined and found nothing in is drawn dim; a chapter it has never scanned is drawn dimmer still, because those two mean opposite things. An even-sized chiasm's arms stop short of meeting, because an even mirror has no centre unit and drawing one to a point would invent it. And no peak is lit anywhere: this corpus carries two rival peak columns that agree on only 37% of the tokens either one flags, so neither is drawn and neither is quietly preferred.

                            One thing the Word layer will not do, on purpose: tell you a word is important. It counts where a word occurs and leaves the weighing to you. A word can carry a whole book while occurring three times in it — chesed occurs three times in Ruth, once each in the first three chapters — and a word can occur constantly somewhere it is doing very little. Counting is the part a computer can do honestly.

                            Try: open the Sky, click Ruth 2, and follow its threads to the chapters that share its rare words. Or open Word, type redeem, and set the book to Ruth.

                            Structures

                            Visual maps of a passage's discourse structure — chiasms, parallelism, repeating patterns.

                            1. Pick a passage.
                            2. View the generated structure map.
                            3. Click a unit to highlight its mirrored counterpart.

                            Try: Genesis 1 to see the creation week's repeating pattern.

                            Switch to Book Map to scan a whole book at once — one tile per chapter. The first scan of a book takes roughly 15–20 seconds per chapter (real detection work, not a delay), but only ever has to happen once; every result is cached, so later visits are instant.

                            Reading the map. A tile carries two separate facts. Its colour is what was detected in that chapter — chiasm, parallelism, staircase or chiastic parallelism — and the pattern's name is written underneath, so you never have to remember which colour is which. Its dot is how surprising that match is: filled for p < 0.01, half-filled for p < 0.05, hollow below that. The dot is three fixed states and never changes size, because a p-value is not a measure of how strong a chiasm is — it says how rarely a reshuffling of the same chapter scores as highly, which is a different question.

                            Two things the map cannot show you, which the legend says instead. The significance test reshuffles each window 200 times, so the smallest p it can ever report is 1/201 — a chapter sitting at that floor is bounded by it, not measured at it, and two such chapters cannot be told apart by this test at all. And a blank tile does not mean there is no structure in that chapter: it means nothing cleared p < 0.10 among the top five windows the scan looked at. An unscanned chapter is shown faded, which is a third thing again.

                            Preparing to teach or preach

                            Evaluate a Sermon

                            Upload or paste a sermon and get a structured reading of it: eight dimensions with the evidence behind each — including a Socratic/classical rhetorical-strategy read alongside the appeals triangle below — a diagram of where its argument carries and where it stops, a check of every claim it makes about the Hebrew or Greek, and a list of passages whose style suggests they may not be yours.

                            You will not get a score. Not a grade, not a percentage, not a ranking. These dimensions don't average — hermeneutical accuracy and vocal variety are not the same kind of thing — and a single number would invite comparison between preachers, which helps nobody. The four small blocks beside each band are not a score either: they are that band's position in an ordered list of four — absent, underdeveloped, present, strong — and nothing adds them up. A dimension marked "not assessed" shows four empty blocks rather than one filled one, because that is the absence of a judgement, not the bottom of the scale. Each dimension also says whether it is something the tool can genuinely check against the text, or an observation for you to weigh. Ethos and doxology are the second kind; a machine can see their shape but not whether they were earned.

                            The most useful part is usually the Spine: your sermon's load path from the text, through the truth, to the implication, the imperative, transformation, and the glory of God. Each link shows whether it carries, strains, or breaks — so you can see exactly where the argument stops holding. A break between truth and implication means an imperative with no textual parent; a break before the last step means the sermon landed on self-improvement.

                            Try: paste a sermon you have already preached, and fill in "Your own assessment first" before you submit. You will get to compare what you thought with what it found.

                            Written sermons only for now — manuscripts, outlines, or transcripts as .docx, .pdf, .txt, .md, or pasted text. Audio and video aren't supported yet, so the delivery dimension is simply not assessed rather than guessed at. Your file is read once and then discarded; only the text is kept.

                            On the originality check. It looks for paragraphs whose style sits well outside the rest of your own writing, and it is careful about what it doesn't flag: anything matching scripture is removed first, and so is anything with an attribution nearby. It reports passages worth checking, never a verdict — a quoted hymn, a read liturgy, a story told in someone else's voice, and your own earlier published writing all look the same from where it stands. The optional web search is off unless you tick it, and it is the only part that sends anything off this machine.

                            How this compares. Below the dimensions, the report checks your sermon against two things this app can itself produce for the same passage: a fresh Exegesis-tab run (what the text itself surfaces, and where your sermon agrees, adds beyond it, or misses something), and — only if you have already generated one — the sermon Prepare a Sermon would produce for the same passage, compared on main thrust, structure, and application. The second comparison is never generated on the spot, since a fresh one takes several minutes; if none exists yet, you'll see a link to Prepare a Sermon, and re-running the evaluation afterward picks it up automatically. Neither comparison is a second opinion to defer to — both are a check on the text versus what your sermon does with it, and both feed into the report's opening summary rather than sitting apart from it.

                            Output language. The Output language field on the form sets the language of everything the evaluation writes about your sermon — its notes, suggestions, and the "How this compares" findings. It never touches a verbatim quotation pulled from your own sermon, which always stays in whatever language you actually wrote it in. This is separate from your interface language (the dropdown in the sidebar), which controls the rubric's own fixed labels — dimension names, bands, and so on — shown around that generated content.

                            Preach a Series

                            Plan a run of sessions on one topic or through one passage — a two-part mini-series, a summer through a book, or a full year through one. Define the series once; generating each session is a separate, deliberate step.

                            1. Create a series: give it a title, then either a passage (a book or a range within it) or a topic.
                            2. Set how many sessions you want and click Auto-divide (instant and free for a passage, snapped to real paragraph breaks where the corpus has them; one quick AI call for a topic, which asks it to suggest that many sub-topics).
                            3. Adjust any session before saving the plan — its title, its own portion of the passage or its own sub-topic, its style, how long it runs, and whether it should close with an altar-call emphasis. Nothing is generated yet at this point.
                            4. Once the plan looks right, save it, then generate sessions one at a time, whenever you are ready for each — never all at once.

                            Session length can vary. A camp week with a longer evening session and shorter morning ones, or a series where one session runs long and the rest are brief — each session's own duration is independent of the others.

                            Style, per session. Most sessions are a sermon, but any single session can instead be a workshop (the Teaching engine's leader/participant format — useful for a hands-on or discussion-style session in the middle of an otherwise preached series) or a short devotional.

                            Series continuity. From the second generated session onward, each one is told what the series has already covered — its theme and a short summary of every session already generated — so it builds on what came before instead of re-explaining background the series already gave, or repeating the same illustration.

                            Try: create a passage series on Ruth 1:1–4:22, set 4 sessions, and Auto-divide — one chapter lands naturally in each session. Generate session 1 to see it in full.

                            Generating a session costs the same as one full run of Prepare a Lesson/Sermon/Devotional (its own set of AI calls, a few minutes) — planning a 52-session series is instant and free, but generating all 52 would cost roughly 52 times that, which is why nothing generates until you ask for that specific session.

                            Exegesis

                            Pick an angle. Rather than starting from a blank question box, the Exegesis tab offers a set of ready-made focus questions — where does this passage turn, what are the verbs doing, what is being emphasised, where does the grammar strain, what does English lose here. Each one was written and tuned once, carefully, so a request buys a specific analysis instead of whatever you managed to phrase in a hurry. Pick one, type your own question, or do both: a lens sets the angle and your question adds your emphasis within it.

                            The list changes with the book you choose, and that is deliberate. The Hebrew Bible in this corpus carries full discourse annotation, so lenses about storyline, boundaries and fronting have real data underneath them. The Greek New Testament carries full morphology but not those layers — so those lenses are not offered there, rather than being answered from general knowledge and charged for.

                            Try: choose Jonah 1, pick "Where does this passage turn?", and run it. Then switch the book to Mark and watch which options disappear.

                            Compare two models — or three. Behind the "Compare two models…" button you can run the same passage and the same method through two different providers, or add an optional third, and read them side by side. There is no winner and no judge. Where they diverge, the text is the arbiter — not whichever model sounded more confident. This is the one place in the app that deliberately costs more: one request per model. The third column is off by default, and the line above the button states the multiplier for whatever you have currently selected.

                            Reading the attention band. Above the columns is a bar split into segments: verses every run cited, verses only one run cited, and — with three runs — verses some but not all of them cited. Each segment's width is simply how many references fall in it, each prints its own count, and the key underneath lists the actual verses, so you can go and check them. It used to be a single percentage, which sounded more precise than it was: "43% agreement" hides whether that is three references out of seven or three hundred out of seven hundred, and those are not the same finding. Note what the band counts — references extracted from each run's prose, not claims. Two runs can cite the same verse and say opposite things about it.

                            Full AI-powered discourse analysis. It needs an account and is paid for with AI credits, after your free requests for the month. You can also upload reference material (PDF/txt/md) or search the web for scholarly sources to include as secondary support.

                            1. Pick a passage range.
                            2. Choose your AI provider.
                            3. Optionally add reference material via upload or "Search the web."
                            4. Click Analyze — a full chapter can take a few minutes.

                            Try: Ruth 1, focus question "Where is the pivot of this passage?"

                            As soon as you pick a passage — before running Analyze — the "Distributional fingerprint", "Biblical DNA", and "Bible Genome" panels below the form load automatically: free, deterministic figures with no AI involved (verb forms, stems, top words, rarest words vs. the whole corpus, and, for Hebrew passages, part-of-speech, clause-role, and rhetorical-relation mixes). Greek passages currently only get the word-rarity half — the app says so plainly rather than showing a broken-looking empty section. "Bible Genome" lists other chapters that share unusually rare vocabulary with this one — click any linked chapter to jump straight to it. These are computed shared-word matches only, not claims of quotation or allusion, and don't yet cross-match Old Testament with New Testament passages or include curated study-Bible cross-references — the panel says so directly.

                            Prepare Lesson / Prepare Sermon / Prepare Devotional

                            Self-serve wizards that go straight from a topic or a passage to a finished, ready-to-use piece — no need to build a Research project by hand first. Behind the scenes each one runs the same Theophilus Method (Observe → Analyze → Interpret → Synthesize) automatically, then generates the lesson, sermon, or devotional on top of it — the Method work is available via a "Show the Theophilus Method" toggle if you want to see it, but it's collapsed by default.

                            1. Pick Topical (type a question or topic and get suggested passages) or Biblical passage (choose the passage yourself, one or several).
                            2. Optionally set an age group and content level (e.g. children vs. adults, introductory vs. in-depth) so the generated material matches your actual audience.
                            3. Optionally add a "preparer's focus" — a free-text note on an angle, theme, or prophetic emphasis you specifically want the generated piece to develop.
                            4. Set duration and tone, then generate.
                            5. Export to Markdown or PowerPoint (lesson/sermon only — devotionals are markdown-only, they're meant to be short).

                            How a prepared sermon is shaped. Sermons come out in four movements — Huh? (what this passage is about, opening with an illustration and no technical detail yet — start low, go slow), Aha! (into the text itself: patterns, verb forms, word order, lexis, hapax legomena, and what each one does to the sense), Hmmm… (what it means, where the application begins) and Yes LORD! (one or two concrete steps, or a change of perspective landing in thanksgiving). The conclusion returns to the image the sermon opened with. Exposition takes about a third of the time and application about half — that split is computed from your chosen duration, not left to chance, and changing the number of moves redivides the exposition rather than lengthening it. A table under the sermon shows that arithmetic: each segment's minutes, its word budget at your speaking speed (scripture reading has none — it is read aloud), and where the clock stands after it.

                            Your stories stay yours. Where the sermon wants a personal story it leaves a dashed Your story here box for you to fill; the app never writes one. If the model writes a first-person anecdote anyway, it is removed after generation and an Anecdote removed flag marks the place. Above every result, Built on your interpretation shows which of Analyze, Interpret and Synthesize it stands on, and the passages with the role each was given.

                            Points: fewer, and odd where the text allows. You can ask for one to five moves, and one, three or five are preferred — not because odd lists are easier to remember (they aren't, particularly) but because an odd number has a middle: a hinge the sermon can turn on. The passage still wins, though. If it genuinely has four structural units you get four, and the sermon tells you which units forced it, because merging two units to reach a tidier outline would misrepresent the text.

                            One thrust, several landings. Under "Who is in the room" you can name the groups actually in your congregation — the sermon keeps a single controlling idea and adds a concrete landing for each. No group is ever named aloud. The sermon describes the situation from inside it and lets the person recognise themselves, because saying "if you are divorced" reaches the one it names and exposes them to everyone else in the same breath. Ask it to suggest groups from your passage, then change them freely — you know who is in the room and it does not. Leave it empty for a single general application.

                            It checks itself before you see it. After drafting, the sermon is measured against the same rubric "Evaluate a Sermon" uses, and every Hebrew or Greek claim it makes is checked against the tagged corpus in code — then it revises itself once. Anything the automatic pass could not resolve is listed at the top of the sermon rather than hidden, so you can see what still needs your judgment.

                            How a prepared devotional is shaped. It follows the same arc as the Daily Devotional on the home page, with room to breathe: what you take the passage to say, then what the original actually says (one to three observations, depending on the length you chose), why that matters, where it sits in the whole story, worship, and one concrete thing for today. The "turn toward worship" control decides how much of the piece that turn is allowed to take. Unlike the daily entry it also carries a closing prayer, and it goes further into where the passage sits in redemptive history — that is what the extra length is for. Every claim it makes about the Hebrew or Greek is checked against the tagged corpus, and anything that could not be confirmed is shown to you rather than hidden.

                            Try: Prepare a Devotional, topical mode, topic "trusting God in waiting" — the shortest of the three, good for a first look at how the wizard works.

                            Before you use any generated lesson, sermon, or devotional — read the actual passage yourself in a Bible you trust, in its full context, and check any historical, linguistic, or doctrinal claim against a reputable commentary or study Bible. See Terms of Service §6 for the full disclaimer.

                            Research and your own library

                            Research workspace: Research, My Commentary & Research Graph

                            These three tabs are one connected workspace, grouped together in the sidebar: Research is where you build evidence-linked claims project by project; My Commentary and Research Graph are two different ways of looking back across everything you've built there, organized by passage instead of by project. Each is covered on its own below, followed by a start-to-finish walkthrough connecting all three.

                            Research

                            Multi-stage research projects following the Theophilus Method (Observe → Analyze → Interpret → Correlate → Evaluate → Synthesize → Communicate → Apply → Transform) — every claim needs evidence or gets flagged "unevidenced." From a solid research project you can draft a full journal article (Write) or a ministry artifact (sermon outline, lesson plan, devotional — and, from a lesson, a 60-second video script). A Guided Study can become a project too: Make… in Ask & Study carries your own observations, interpretations and applications into its stages.

                            1. Create a project (passage or topic).
                            2. Work through each Method stage in order. The row of nine above the stages shows where the project stands — each stage marked yours, AI draft or empty, the next one to do outlined — and takes you to a stage's card when you choose it.
                            3. Once the interpretive stages are solid, use Write or Ministry to generate a finished document.

                            Try: create a passage project for Ruth 1, then draft its Observe stage.

                            A project also has several optional tools further down the page, each independent of the others: Competing Views (11 interpretive lenses compared side by side), Literature Review and Gap Finder (over your attached sources), Research Quality Review (coverage across nine fixed analytical dimensions — not a correctness score), Ask the Tutor (Direct, Guided, Coach, or Assessment mode — you can always ask for a direct answer regardless of mode), and AI Research Supervisor (a skeptic's critique against 8 questions, advisory only). Click Collaborators to invite someone by email — they can view and comment, never edit; if they don't have an account yet, they get access automatically the moment they sign up with that address. Projects others have shared with you appear under "Shared with me" on the Research project list. When a project's interpretive stages are solid, scroll down to Write — Journal Article — state a research question, click Propose Outline to review the structure, then Draft Article to generate a full, cited manuscript with the same citation-honesty guard as Literature Review, ready to export as Markdown or DOCX.

                            My Commentary

                            Every claim you've approved with "Add to My Commentary" (from any Research project), assembled into one reading view — your own words, verbatim, grouped by the verses they're about. No AI involved: nothing here is generated, only gathered. Works whether or not you're signed in.

                            1. In Research, open a project's Claims section and click "Add to My Commentary" on any claim that has verse evidence attached.
                            2. Open My Commentary — the book appears in the Books list.
                            3. Pick a book and chapter (or click the book in the list) to read every approved claim for that chapter's verses, with a link back to the project it came from.
                            4. Changed your mind? Click Remove on any entry here (or "Remove from My Commentary" on the claim card in Research) — it leaves this view only; the claim itself stays untouched in its project.

                            Try: in Research, add a claim to Ruth 1:1 with verse evidence "Ruth-1-1," click "Add to My Commentary," then browse to Ruth 1 in My Commentary.

                            Research Graph

                            A map of how your own claims connect to verses, shared vocabulary, and sources — built entirely from data you've already recorded. Deterministic, not AI-generated: every line traces to a real claim, verse, or citation.

                            1. Click "Refresh graph" (or just visit the tab — it refreshes automatically) to pull in your latest claims.
                            2. Pick a verse from the picker, or paste a node key (e.g. claim:5) to center the diagram on it.
                            3. Click any neighbor in the diagram to recenter on it and explore further.

                            Try: after adding a claim with verse evidence in Research, click the claim's "View in Graph" link to see it centered in the diagram.

                            Walkthrough: from a claim to your commentary to the graph

                            The three tabs above are meant to be used together, in this order. A concrete run, start to finish, using the sample Ruth data already on screen:

                            1. Open Research → Create project → passage, book Ruth, chapter 1 → Create project.
                            2. Under Claims, type a claim — e.g. "The famine drives Elimelech to Moab" — and click Add claim.
                            3. On that claim card, click Show Evidence, choose kind verse, type the ref Ruth-1-1, and click Add evidence. The claim's badge changes from "unevidenced" to a coverage score — this step is what lets My Commentary and Research Graph find the claim later; a claim with no verse evidence won't appear in either.
                            4. On the same card, click Add to My Commentary.
                            5. Open My Commentary — "Ruth" now appears in the Books list. Click it, or use the book/chapter picker, to see your claim under Ruth 1:1, in your own words, with a link back to the project.
                            6. Back in Research, click View in Graph on the same claim card — this jumps straight to Research Graph with the claim centered, showing its connection to the verse it's anchored to and any source or shared-vocabulary links. Click a neighbor node to explore outward from there.

                            The whole loop takes under a minute once you've done it once — the extra steps (adding evidence, clicking "Add to My Commentary") are what make a claim show up in the other two views; nothing happens automatically from just writing the claim text.

                            My Library

                            Everything you've saved from Read, Exegesis, Structures, and Search, organized into folders. Copy or download any item as Markdown, or delete what you no longer need.

                            1. From Read, Exegesis, Structures, or Search, save a result you want to keep.
                            2. Optionally create a folder and file the item into it.
                            3. Open My Library any time to browse, copy, download, or delete saved items.

                            Your account and settings

                            My Profile

                            Manage your AI credits and opt in to research memory.

                            • AI credits — see your balance, buy a one-time credit top-up, or set up auto top-up.
                            • Research memory — off by default; when enabled, facts you save (via "Save to memory" buttons around the app, or typed directly here) are available to the AI Tutor for continuity across projects. Always yours to edit or delete.

                            Language

                            The interface can display in English plus fifteen other languages — Indonesian, Simplified Chinese, Burmese, Thai, Tamil, Tagalog, Hebrew, Greek, Japanese, Korean, Spanish, German, Italian, French and Dutch. Pick one from the language switcher in the sidebar. English is the only one that has been through human review; every other language is in beta — machine-translated and not yet checked by a fluent theological reader, so treat the wording as approximate and the original as authoritative. Separately, most AI-powered tools let you choose an output language for the generated content itself (which can differ from your interface language) — look for a language selector near that tool's controls.

                            Logos & Zotero

                            Neither of these is an "account link" — Logos doesn't offer one, and only one of the two Zotero paths below crosses the network at all. Read the fine print before you rely on either.

                            Zotero — file import (works everywhere, including this hosted site). The reliable path. In Zotero: File → Export Library…, format BibTeX or RIS. In a research project's Sources section, upload the resulting .bib/.ris file.

                            Zotero — live "Pull from Zotero" button. Only works when you're running TheophilusBible locally (the desktop app, or theophilus serve on your own machine) with the Zotero desktop app also running on that same computer, with Zotero's Settings → Advanced → "Allow other applications on this computer to communicate with Zotero" turned on. On the hosted site this button will always fail — "localhost" means Render's own server, never your computer, so no amount of getting Zotero running on your end fixes it. Use the file import above instead.

                            Logos. Local-only, macOS-only, and there's no cloud account to connect — the integration reads Logos's own on-disk library/notes databases directly and sends deep-link URLs to open a passage in the Logos app. This only works running TheophilusBible locally on the same Mac that has Logos installed; it cannot work on the hosted site at all, on any platform. If that's your setup: open a passage-based research project, and Connectors will show logos: available ✓ along with an "Open [passage] in Logos" button and a catalog search box. If it instead shows "unavailable," the reason listed there is the actual cause (not on a Mac, or Logos has never been run). Importing your own Logos notes as a source is possible today only from the command line (theophilus logos open / theophilus logos catalog) — there's no button for that specific action yet.

                            Appearance

                            Accent color, font pairing, text size, and light/dark mode — all client-side, remembered across visits.

                            Two reading themes sit alongside light and dark: Sepia, a warm paper tone for long reading, and Midnight, a darker and lower-contrast variant of dark mode. They change the page's colours only — nothing about the text, the analysis or what is saved.

                            1. Click Appearance in the sidebar.
                            2. Pick a preset or customize each option.
                            3. Changes apply instantly — no save button needed.

                            Account & sign-in

                            You don't need an account to read. The Library, Search, Structures, Diagram, commentary and the daily devotional are open to everyone. Sign in (Google, GitHub, Microsoft, or an email and password) to use the AI tools, which are paid for with credits, and to keep your own projects, uploads and flashcards.

                            Signed in somewhere you shouldn't have stayed signed in? My Profile has Sign out everywhere else: it ends your session on every other browser and device and keeps this one. Resetting your password does the same.

                            Sharing, and getting help

                            Pages you can share or link to

                            Everything above lives inside this app, which means a link to it opens the app rather than the thing you wanted to show someone. A few pages exist outside it as plain web pages — they open in any browser, need no account, and read properly when pasted into a message, an email, or a post.

                            • Today's devotional, and every past one at its own permanent address (browse the archive) — the dated link is the one to share, since it keeps pointing at that entry.
                            • Samples — one example of each kind of work, for showing a colleague what the platform produces.
                            • The front page, which explains the platform to someone who has never heard of it.

                            These are also the pages search engines can read. The app itself is invisible to them, which is why the public pages exist.

                            Contact us

                            Feature request, feedback, or a bug — click Contact us in the sidebar. No account needed, and we read every message.

                            Sources

                            The texts and linguistic analysis behind TheophilusBible come from the scholars and projects below. Where a source is licensed, its terms and our modifications are stated in full.

                            Hebrew Bible — text, morphology and clause analysis

                            The text used for this work is the Biblia Hebraica Stuttgartensia Amstelodamensis (BHSA), which contains the text of the Hebrew Bible augmented with linguistic annotations compiled by the © Eep Talstra Centre for Bible and Computer, Vrije Universiteit Amsterdam. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) licence. The Hebrew text is based on the Biblia Hebraica Stuttgartensia, edited by Karl Elliger and Wilhelm Rudolph, Fifth Revised Edition, edited by Adrian Schenker, © 1977 and 1997 Deutsche Bibelgesellschaft, Stuttgart.

                            The licence includes a disclaimer of warranties. Source: github.com/ETCBC/bhsa, version tf/2021. Cited, as the ETCBC asks, by its persistent identifier: 10.17026/dans-z6y-skyh. The ETCBC treats the BHSA as one package, text and annotation together; commercial use of it is for the Deutsche Bibelgesellschaft to license, and we make none.

                            Modifications. The source data is not altered. We join it to our per-token records and derive from it: clause-atom boundaries (from otype and oslots), the clause-connection code, clause relation, clause type and text type (code, rela, typ, txt), the clause dependency edge (mother), and paragraph boundaries computed from the hierarchical paragraph number (pargr).

                            Wherever this analysis appears in the app it is marked ETCBC, to keep it distinct from the material we generate ourselves. Because its licence is non-commercial it is shown free and is never read by the AI tools that credits pay for; those read the MACULA Hebrew datasets below instead.

                            Greek New Testament

                            SBL Greek New Testament (SBLGNT), edited by Michael W. Holmes.
                            © Society of Biblical Literature and Logos Bible Software.
                            Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0), which includes a disclaimer of warranties. Source: sblgnt.com, text and apparatus from github.com/LogosBible/SBLGNT.

                            English translation for Guided Study

                            Rotherham's Emphasized Bible (The Emphasised Bible, 3rd ed., 1902), translated by Joseph Bryant Rotherham. Public domain. Digital text from github.com/scrollmapper/bible_databases; page scans at archive.org. This digitisation keeps Rotherham's emphasis by commas but not his sublinear emphasis signs.

                            Berean Standard Bible (BSB), dedicated to the public domain in 2023, and Young's Literal Translation (1898), translated by Robert Young, public domain. Digital texts from github.com/scrollmapper/bible_databases. The King James Version (1769) is the same text the Library shows. Copyrighted versions (NIV, ESV, NKJV, NLT, CSB) are not copied here: Guided Study links to them on YouVersion and Blue Letter Bible.

                            Sentence diagrams — syntax trees for both testaments

                            MACULA Hebrew Linguistic Datasets and MACULA Greek Linguistic Datasets, © 2022–2024 Biblica, Inc., with syntax trees by Clear Bible, Inc.; the Hebrew trees build on the Westminster Hebrew Syntax, © the J. Alan Groves Center for Advanced Biblical Research, and OpenScriptures Hebrew Bible morphology.
                            Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0), which includes a disclaimer of warranties. Sources: github.com/Clear-Bible/macula-hebrew (WLC) and github.com/Clear-Bible/macula-greek (SBLGNT). English glosses in the diagrams are those the datasets carry: the Berean Interlinear Bible (public domain) for Greek and the Cherith glosses, © Cherith Analytics, CC BY 4.0, for Hebrew.

                            The Hebrew for the paid AI tools. Read, Exegesis, Research, Ask, and the lesson, sermon and devotional tools read the Hebrew Bible from MACULA Hebrew — its WLC text, OSHB lemma and morphology, Cherith glosses and clause structure — rather than from the BHSA above, and the structure findings and word counts they are given are computed from it afresh. Each such request tells the model which dataset it is reading.

                            Modifications. We keep each tree's constituents, roles and glosses in a compact form and draw them as diagrams. Beyond the source we choose the head word of Greek phrases, suggest a relation name from a clause's joining word, and raise a Greek main clause where the conversion left one unraised; the Diagram view lists each of these under Where these lines come from.

                            Literary structures in Compare

                            The Companion Bible (1909–1922), with the structures of E. W. Bullinger. Public domain; page scans at archive.org. Transcribed by TheophilusBible at github.com/TheophilusBible/explore and published there under the MIT licence. Most outlines have not yet been checked against the scan, and some letters were supplied by the transcribers; Guided Study's Compare says so beside each one.

                            Cross-references between the testaments

                            OpenBible.info cross-references, licensed under Creative Commons Attribution (CC BY); source: openbible.info/labs/cross-references, read from the copy in scrollmapper/bible_databases. Modifications. We keep only references from one testament to the other with at least ten votes, strongest first.

                            Scholarship applied in the analysis

                            The discourse and structural methods this platform implements are described in their authors' own work, and are cited at the point of use rather than reproduced here. They include Winther-Nielsen and Talstra, A Computational Display of the Book of Joshua (1995); Winther-Nielsen, A Functional Discourse Grammar of Joshua; and Malcolm Goh's doctoral work on Biblical Hebrew discourse and on the Greek perfect.

                            Corrections

                            If you hold rights in anything here and this page states them wrongly or incompletely, please tell us using ✉ Contact us in the sidebar and we will correct it.

                            Terms of Service

                            Last updated: 27 September 2026

                            1. The service

                            TheophilusBible ("the Service") is a research platform over the Hebrew Old Testament and Greek New Testament: browsing and searching the text, a deterministic structural detector (Structures), plus AI-powered tools (Read, Exegesis, Research) that use a large-language-model provider — either our own account or an API key you supply yourself — to generate analysis. Browsing, Search, and Structures are free and don't require an account. The AI-powered tools require signing in.

                            2. Accounts

                            You may sign in with Google, GitHub, Microsoft, or Apple, or create an email-and-password account. You're responsible for keeping your credentials secure and for all activity under your account. Sessions last until you close your browser or sign out — we don't keep you signed in indefinitely on a shared device.

                            3. What is free, and what AI usage costs

                            Everything on the Service that does not call an AI model is free to use, with or without an account: the Library in every book, search, structures, diagrams, commentary already written, audio, and the daily devotional. There are no subscriptions.

                            AI-powered requests (for example Read, Exegesis, Research and the preparation tools) need an account and are paid for with credits. You get 5 free AI requests every 30 days, on a rolling basis; after that, a request is charged to credits you purchase from us. Credits are priced at what the AI provider charges us plus a share for running costs, and the card fee is deducted when you buy. You may optionally enable automatic top-ups (charging your saved card when your credit balance falls below a threshold you set) — this is off by default and only applies once you've turned it on in My Profile. Credits you purchase do not expire. Prices and the free-request allowance and its renewal period may change; we'll try to give notice of material changes.

                            The AI tools you pay for read the Hebrew Bible from the MACULA Hebrew datasets, which are licensed for commercial use, and not from the BHSA-derived annotation shown free in the Library, which is licensed to us on non-commercial terms only (section 5b). Credits pay for the AI call, never for access to that material. Any subscription that already exists is unaffected and can be cancelled at any time.

                            4. Acceptable use

                            Don't use the Service to violate the law, infringe anyone's rights, attempt to extract or resell the underlying corpus data at scale (see section 5b — parts of it are licensed to us on non-commercial terms and are not ours to sell on), abuse the free-trial or free-request mechanism (e.g. creating repeated accounts to bypass it), or attempt to disrupt or gain unauthorized access to the Service.

                            5. Source text vs. generated interpretation

                            The underlying Hebrew Old Testament and Greek New Testament text shown in Library, Search, Read, Structures, Exegesis, and Research is drawn from established critical editions and manuscript sources — named, with their licences, on the Sources page — it is fixed reference text, not generated or altered by an AI model. Anchoring every tool to that fixed source text reduces, but does not eliminate, the risk of the AI inventing wording that isn't actually in the passage. It does not prevent the AI from making an error of translation, grammar, historical background, cross-reference, or interpretation when it analyzes that text. Every explanation, research synthesis, lesson, sermon, and devotional the Service produces is generated by a third-party large-language model and can be wrong, incomplete, or a plausible-sounding fabrication ("hallucination") even when it quotes the source text correctly. Structures' chiasm/parallelism maps are the exception — a deterministic statistical detector, not an AI model, computes them, so they carry no hallucination risk; they can still be false positives or miss a real pattern, which is why they are presented as leads for the exegete, not verdicts.

                            5b. Licensed source data, and what you may do with it

                            Parts of the reference material are licensed to us by third parties and reach you on their terms, not ours. The Hebrew text, its morphology, and the clause and paragraph analysis shown in the interlinear derive from the ETCBC's BHSA, licensed under CC BY-NC 4.0; the Greek text is the SBLGNT, licensed under CC BY 4.0. The full notices, and a statement of the modifications we make, are on the Sources page. Wherever ETCBC-derived analysis appears in the app it carries an ETCBC badge that links there. The BHSA-derived material is shown free and is never part of what credits buy: an AI request you pay for reads the Hebrew Bible from the MACULA Hebrew datasets (CC BY 4.0) instead.

                            Those licences travel with the material. If you copy, export, or redistribute the licensed source data — or anything you make from it that still contains it — you take on the licence's own conditions rather than ours: for the BHSA-derived material, crediting the ETCBC, indicating any modifications you make, and not using it for commercial advantage; for the SBLGNT, crediting its editor and publishers. CC BY-NC 4.0 carries no share-alike clause, so it does not require you to release your own adaptation under the same licence. This is the reason for the restriction in section 4, and it applies to exports and downloads you take away from the Service just as it does inside it.

                            Our own generated material — the explanations, commentary, research syntheses, and prepared lessons, sermons and devotionals described in sections 5 and 6 — is not covered by those licences, and section 10 governs the content you create. Where an export mixes the two, the licensed portion keeps its licence.

                            6. Lessons, sermons, and devotionals

                            Read, Exegesis, and Research output is offered as a research aid, not as authoritative scholarship, pastoral counsel, or a substitute for consulting qualified scholars or clergy. Prepare Lesson, Prepare Sermon, and Prepare Devotional go further — they produce a complete, ready-to-use piece — but every word of that finished lesson, sermon, or devotional, including any Scripture application, illustration, or claim about historical or cultural background, is still produced by a large-language model and carries every limitation described in section 5. Do not teach, preach, or share any lesson, sermon, or devotional generated by this Service without first (a) personally reading the actual passage yourself in a Bible you trust, in its full context — not just the excerpt shown — and (b) verifying any historical, linguistic, doctrinal, or factual claim against a reputable commentary, study Bible, or other qualified source. Treat everything this Service generates as a first draft from a research assistant, never as finished or authoritative teaching in itself. You're solely responsible for verifying anything you rely on or pass on to others.

                            7. Translations and other languages

                            The Service's interface and generated content are built and reviewed first in English. Other interface languages (currently Indonesian and Simplified Chinese) and any content generated directly in a non-English output language are produced by the same AI provider and have not been reviewed by a human fluent in that language for theological or linguistic accuracy. Translating — whether the interface, AI output, or content generated natively in another language — can introduce its own errors or shift meaning, on top of any error already present in the underlying analysis. If your ministry language isn't English, have a fluent speaker check generated material before use, in addition to the verification described in Section 6.

                            7b. Institutional and organisational access

                            Access may also come from an institution — a school, seminary, department, or church — that holds a licence with us. Where it does:

                            • Your access lasts as long as that institution's licence does. When the licence expires or is not renewed, organisation-derived access ends and your account returns to the free tier. Your account itself is not deleted, and work you created remains yours.
                            • An administrator at your institution can add you to, or remove you from, its organisation, and can see a roster listing members, their role, and when they joined. They cannot see the content of your research, exegesis, notes, or any other private work.
                            • If you register with an email address on a domain your institution has verified with us, you may be added to its organisation automatically. If you do not want that, use a personal address.
                            • Institutional licences are agreed and invoiced directly with us, not purchased through this Service, and the terms of that agreement govern seat counts and duration.

                            8. No refunds

                            All payments — subscription charges, one-time AI credit purchases, and auto-top-up charges — are final and non-refundable, including for partial months or years, unused credits, and unused subscription time. This applies even if: the Service or a specific feature stops working or becomes unavailable, whether suddenly, temporarily, or permanently; we are unable to continue operating, maintaining, or monitoring the Service (for example, if an underlying AI provider changes its terms, pricing, or availability, or if we discontinue the Service entirely); or you simply stop using the Service before your subscription period or credit balance is used up. If you believe you were charged in error (e.g. a duplicate charge), contact us and we'll look into it — that's a good-faith exception, not a right to a refund.

                            9. Service availability and future development

                            We do our best to keep the Service running and to keep improving it, but we make no guarantee that the Service will remain available, that any particular feature will continue to exist, or that the Service will be maintained, updated, or upgraded in the future. Development, hosting, and our relationships with AI providers all depend on factors outside any guarantee we can make. If we need to significantly reduce, suspend, or discontinue the Service, we'll try to give notice, but we're not obligated to provide a minimum notice period, a migration path, or compensation for doing so.

                            10. Your content

                            Reference materials you upload, research projects, claims, and drafts you create remain yours. We store them to provide the Service and don't sell them. See the Privacy Policy for what we collect and why.

                            11. Disclaimer and limitation of liability

                            The Service is provided "as is," without warranties of any kind. To the maximum extent permitted by law, we aren't liable for indirect, incidental, or consequential damages arising from your use of the Service, including reliance on content the Service generates.

                            12. Changes

                            We may update these Terms from time to time; we'll update the date above when we do. Continued use after a change means you accept the update.

                            13. Contact

                            Questions about these Terms — use Contact us in the sidebar.

                            Privacy Policy

                            Last updated: 27 September 2026

                            What we collect

                            • Account info: email, display name, and provider identifier from Google/GitHub/Microsoft/Apple sign-in, or a hashed password if you register with email — we never store your password itself.
                            • Your own API keys, if you save one — for a research connector (e.g. CrossRef, OpenAlex). Encrypted at rest, and never sent back to your browser once saved. AI provider keys (Anthropic, OpenAI, Google) can no longer be saved on this site; any you saved before 27 September 2026 are kept, unused, until you delete them in My Profile.
                            • Content you create: uploaded reference material (PDF/txt/md), research projects, claims, drafts, items you save to My Library (Read/Exegesis/ Structures/Search results you choose to keep), and contact-form submissions.
                            • Usage data: which tools you use and the text of queries you submit to them, so we can improve the Service. Not sold or shared for advertising.
                            • Billing data: subscription and credit-purchase amounts, plus Stripe-issued reference IDs (customer, subscription, and — only if you opt into automatic top-ups — a saved payment method ID) needed to process billing. We never see or store your actual card details; Stripe handles those directly.
                            • Your IP address, briefly: sent to Cloudflare Turnstile for bot detection on sign-up and the contact form, and held in server memory (not written to our database) for a short window to rate-limit repeated sign-up/login attempts from one address.

                            Third parties we share data with

                            • Stripe — payment processing for credit purchases (and for any subscription made before subscriptions were retired), including a saved payment method if you opt into automatic top-ups.
                            • Anthropic, OpenAI, or Google — whichever AI provider you select receives the passage/query text needed to generate a response, via our account.
                            • Research connectors (e.g. CrossRef, OpenAlex) — only if you use Research features that query them, via our account or your own saved key.
                            • Cloudflare Turnstile — bot protection on sign-up and the contact form; receives your IP address.

                            We don't sell your personal data.

                            Cookies

                            We use a single session cookie to keep you signed in. No advertising or cross-site tracking cookies.

                            Data retention and deletion

                            We keep account and content data for as long as your account is active. To request deletion of your account and associated data, use Contact us in the sidebar.

                            Children

                            The Service isn't directed at children and we don't knowingly collect data from anyone under 13.

                            Changes

                            We may update this policy; we'll update the date above when we do.

                            Contact

                            Questions about this policy, or a data deletion request — use Contact us in the sidebar.

                            Reset your password

                            Admin

                            —Users
                            —In trial
                            —Subscribed
                            —Comped / admin
                            —Credits outstanding
                            —Unresolved grant failures
                            Institutions

                            Institutional licences are invoiced, never self-serve. Work down this panel in order — an organisation grants nothing until step 4.

                            1. Quote

                            Enter their expected user count to get the band and price. The per-seat figure is for the conversation only — we sell capacity, not seats.

                            2. Create the organisation

                            Creating does not grant access. Do this as soon as the conversation is real — it gives you somewhere to record the domains.

                            3. Claim their email domains

                            Only tick verified once you have actually confirmed they control the domain. An unverified domain joins nobody — auto-join on an unconfirmed domain would let anyone who can register an address there inherit the licence. Most institutions have two: staff and student.

                            4. Activate on payment

                            Set the expiry to the end of their academic year — seminary budgets run Sep–Aug, so a January renewal date fights the budget cycle for no reason. This is the step that grants access, and renewal later is this same field again.

                            Existing organisations

                              Users

                              Everyone with an account. "Comp" grants the same billing exemption admin accounts get (never charged for anything, trial never expires) without any of admin's app privileges. "Test user" is lighter: free platform access (no subscription needed) but they still pay for their own AI usage — free requests, then credits or their own API key. Both stay per-user toggles, not role changes.

                                Commentary: reader pushback

                                Claims readers have marked I disagree or Not convinced, ranked by how much the disagreement matters rather than by how many people clicked. A claim the model rated high confidence that a reader rejected sorts to the top, because that is where generated commentary is most likely to be confidently wrong. Several readers converging on the same claim independently raises it further.

                                This never edits anything. To act on an entry, open that pericope in Commentary and use Rewrite this verse or a section rewrite button — a rewrite replaces only that section and leaves the rest of the commentary alone.

                                Annotation review

                                Clauses where the AI cross-check pass disagreed with the corpus's original heuristic value — a queue of genuine disagreements to resolve, not a general database editor. Resolving one writes your choice back to every token in that clause, marks it human_reviewed (a real decision, distinct from the automated cross-check signal), and logs the change to the audit trail. Requires a fresh code from your authenticator app (set up under My Profile) before any write — viewing this list does not.

                                Running the cross-check itself is not a write to the corpus — it only produces candidate disagreements below for you to resolve, so it does not need a TOTP code. One AI call per clause; a whole book can take a few minutes.

                                  NT annotation generation — first-pass, no baseline

                                  Not a cross-check. The Greek NT has no existing tagmemic annotation to compare against (confirmed: every discourse column is empty for all Greek tokens), so this generates a first-pass judgment from scratch, verse by verse — every generated row needs your review, not just disagreements, because there is no baseline to disagree with. Never conflate this queue with "Annotation review" above.

                                    Platform spend & revenue

                                    Real AI-provider cost against the platform's own key(s), including admin/comped/free-trial calls nobody was individually charged for. To add funds, go to your AI provider's own billing console directly — this app has no way to do that for you.

                                    Credit-pack revenue collected via Stripe against that AI spend, over the same window — a rough gauge of whether credit-pack sales are keeping pace with AI cost. Excludes subscription revenue (Stripe is the source of truth for that) and is not a substitute for real accounting.

                                    Failed credit grants

                                    A customer paid via Stripe but the credit never landed in their balance — Stripe retries the webhook automatically for a while, which usually resolves these on its own. If one is still here after a day or two, grant the credits manually below and mark it resolved.

                                      Usage

                                      Which tools get used, and the recent free-text queries behind them — including compliments and feedback from the Contact-form submissions below.

                                      The north star (Theophilus 2030 Master Plan §14): distinct users per week who linked at least one piece of evidence to a claim — not raw request volume.

                                        Contact-form submissions

                                        Feature requests, feedback, and bug reports. Category and message only; nothing is sent automatically, reply via your own mail client.

                                          Feature flags

                                          Ship a new feature admin-only first, flip it on for everyone once it's ready. A flag with no toggle below yet is treated as admin-only.

                                            Daily Devotional

                                            Nothing publishes without your approval. Entries are drafted ahead of time into a rolling queue; a drafted entry is invisible to readers until you approve it. Approving also retires that passage from the candidate pool so it doesn't recur. Sending an entry back to draft — or regenerating it — makes it private again immediately.

                                            Candidate pool

                                            A deterministic, AI-free sweep over the tagged corpus for verses carrying a checkable linguistic feature. Re-running is safe and cheap: it updates scores in place and never resurrects a passage that has already run.

                                            Criteria

                                            Steers what gets drafted next, and what a regeneration produces.

                                            Feature-type weights

                                            A weight of 0 removes that feature type from the mix entirely. 1 is neutral.

                                            Publish timing

                                            An approved entry does not go public the instant its date arrives — it waits for the publish hour below, on its own date, in this timezone. Before that, an approved-ahead-of-time entry is exactly as hidden as an unreviewed draft.

                                            Seasonal anchors

                                            Pin a date to a book, so that date always draws from it. Dates are MM-DD and recur every year — movable feasts (Easter, Lent) need re-pinning annually.

                                              Queue

                                                Devotional — YouTube Shorts script

                                                Reshapes today's devotional into a copy-paste-ready ~55-60s video script. Personal tool: nothing here is public, and it doesn't touch the devotional itself.