What if you could carry a seminary library in your pocket — lexicons, commentaries, interlinear texts — all linked to every verse, all completely free? Blue Letter Bible has been making that possible since 1996, and thirty years later it remains one of the most trusted and comprehensive free Bible study platforms in the world.^1
BLB offers over 30 Bible translations (including KJV, ESV, NLT, NASB, CSB, NKJV, and NIV), Hebrew and Greek interlinear tools with Strong's Concordance integration, 8,000+ text commentaries from 40+ authors, audio Bibles, dictionaries, encyclopedias, and the Treasury of Scripture Knowledge — all connected verse-by-verse so you can go as deep as you want with a single tap.^3 The mobile apps (iOS and Android) support highlighting, note-taking, parallel Bible views, and offline downloads. The web version recently added parallel version comparison, bringing a popular mobile feature to desktop users.^5
The platform continues to grow its content library. Recent additions include Scofield Reference Bible study notes, a verse-by-verse commentary partnership with The Bible Says, and a SermonAudio integration that surfaces 1.5 million sermon recordings directly alongside BLB's commentary tools.^6^8 The BLB Institute (study.bible) offers free courses in Christian belief and practice, serving over 60,000 students globally.^9
Co-founded by Jim Milligan and Frank Rabinovitch as a ministry of Sowing Circle, BLB is a 501(c)(3) nonprofit funded entirely by donations. The ministry holds to biblical inerrancy and serves users across a wide range of evangelical traditions without denominational restriction. BLB is ECFA accredited and reports nearly 10 million annual users with 500 million page views.^2
Why Christians Love Blue Letter Bible: A longtime iOS reviewer wrote: "This is the most versatile Bible app I've ever tried. I had several before, but this one has replaced all of them." Another shared a powerful testimony: "BLB was my first virtual bible and I was so excited when I got it because I could take my bible anywhere I wanted to go... God had a plan for me to change someone's life with it."^3 A user from Tasmania shared: "I like your daily devotion — Day by Day by Grace by Bob Hoekstra."^11
Notable:
- SermonAudio partnership integrates 1.5 million sermons into BLB's commentary section by Bible passage — the platform's most significant content expansion in 2026^8
- Scofield Reference Bible study notes added (Feb 2026), providing extensive inline notes for every verse and a detailed topical index^6
- New "The Bible Says" verse-by-verse commentary partnership providing ongoing, systematic coverage of all Scripture^7
- iOS app updated to v2.82.2 (Apr 2026) with NLT Bible now available for download^3
- Web version gained parallel version comparison feature (Apr 2026), matching the popular mobile app capability^5
- Nearly 10 million annual users and 500 million page views — serving users in English, Spanish, Chinese, Korean, German, Russian, French, Hebrew, Greek, Arabic, and Latin^8
- BLB Institute (study.bible) serves 60,000+ global students with free courses^9
- ScriptureMark digital markup tool launched for personalized Bible study formatting
- 16-person team based in Greenville, South Carolina^10
Platforms: iOS, Android, Web Pricing: Free
