Ever searched the Bible for a concept you couldn't quite put into words? Biblos uses semantic search to help you find passages by meaning, not just keywords — so a search like "how to deal with anxiety" surfaces relevant verses even if the word "anxious" never appears.^1
Built by developer Jon Boldt, Biblos runs on BGE-large-en-v1.5 embeddings — a 1024-dimensional, 335M-parameter model that pre-computes vectors for every verse in the Bible. Type a concept or question, and it ranks passages by semantic similarity, with optional AI summarization grounded in the retrieved text.^1
The hybrid reference loader handles direct lookups too: type "John 3:16" or "Psalm 23" and the passage loads instantly. For New Testament verses, you can view the original Greek alongside definitions from the Dodson Greek Lexicon, plus commentary from Church Fathers for historical theological context.^2
A companion reading plan at biblos.app/daily offers the Blue Letter Chronological Bible Year — 365 daily readings in chronological order, adapted from Blue Letter Bible's reading program with built-in ESV audio narration.^3
Why Christians Love It"Playing with this a bit more, and it is very cool! One thing I like is that it provides the source text, so you can verify whether the summary is accurate." — Hacker News user^4
"Bible study just got more lit." — Hacker News user^4
"Impressive. It actually gave useful results and summary for annihilationism." — Hacker News user^4
Notable- Free to use, with no sign-up required^1
- Open source on GitHub (CC BY-NC 4.0)^2
- Featured on Hacker News "Show HN" with enthusiastic technical discussion^4
- Created by developer Jon Boldt as a free Bible study tool; also maintains a daily reading plan at biblos.app/daily^1
- Uses BGE-large-en-v1.5 embeddings with Greek lexicon and Church Fathers commentary integration^2
- Daily reading plan available: Blue Letter Chronological Bible Year (365 days)^3
