JSON Bible API Theological Knowledge Graph

Cross-References with Strength Weights

GET /api/cross-references?reference=John+3:16

John 3:16 source

“For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.”

Romans 5:8 very high

Romans 8:32 very high

John 3:15 very high

John 6:40 very high

John 3:36 very high

1 John 4:19 very high

John 10:28 very high

Romans 5:10 high

{
  "status": "success",
  "from_index": 26137,
  "results_count": 19,
  "data": [
    {
      "verse_index": 28056,
      "verse_id": 45005008,
      "book": { "id": 45, "name": "Romans" },
      "chapter": 5, "verse": 8,
      "reference": "Romans 5:8",
      "osis_id": "Rom.5.8",
      "weight": 954,
      "strength": "very_high"
    },
    {
      "verse_index": 28149,
      "verse_id": 45008032,
      "book": { "id": 45, "name": "Romans" },
      "chapter": 8, "verse": 32,
      "reference": "Romans 8:32",
      "osis_id": "Rom.8.32",
      "weight": 488,
      "strength": "very_high"
    },
    {
      "verse_index": 26136,
      "verse_id": 43003015,
      "book": { "id": 43, "name": "John" },
      "chapter": 3, "verse": 15,
      "reference": "John 3:15",
      "osis_id": "John.3.15",
      "weight": 483,
      "strength": "very_high"
    },
    {
      "verse_index": 26298,
      "verse_id": 43006040,
      "book": { "id": 43, "name": "John" },
      "chapter": 6, "verse": 40,
      "reference": "John 6:40",
      "osis_id": "John.6.40",
      "weight": 381,
      "strength": "very_high"
    }
  ]
}

Full API reference →

A Theological Knowledge Graph

Cross-references tell you what connects. The Topics graph tells you how and why — with typed edges that encode doctrinal flow, not just adjacency.

faith → depends-on → jesus-christ

repentance → leads-to → faith

atonement → results-in → redemption

resurrection → reverses → death

salvation → leads-to → eternal-life

grace → depends-on → jesus-christ

Each edge has a canonical type — leads-to, depends-on, reverses, results-in and more — so an AI can follow a valid path through doctrine, not just match keywords.

Example traversal path

sin → leads-to → repentance → leads-to → faith → depends-on → jesus-christ

jesus-christ → leads-to → the-cross → leads-to → atonement → results-in → redemption

redemption → leads-to → salvation → leads-to → eternal-life

GET /api/topics/salvation

Authorization: Bearer your_api_key

{

  "topic": { "slug": "salvation", "name": "Salvation", "type": "doctrine" },

  "related": [

    { "slug": "faith",         "name": "Faith",         "relation": "depends-on", "direction": "outgoing" },

    { "slug": "jesus-christ",  "name": "Jesus Christ",  "relation": "depends-on", "direction": "outgoing" },

    { "slug": "eternal-life", "name": "Eternal Life", "relation": "leads-to",   "direction": "outgoing" }

  ],

  "anchors": [

    { "reference": "Romans 10:9",   "score": 0.95 },

    { "reference": "Ephesians 2:8", "score": 0.95 }

  ]

}

Topics API reference →

Why devs choose BibleBridge

Handles messy real-world input — iitim3:16, Ps23, compound ranges, and archaic book names all resolve.

Weighted cross-references — 340,000 relationships with raw scores and strength tiers (very_high → low).

Canonical + OSIS IDs on every response — interop-safe identifiers that work across systems.

Stable, versioned schemas — ship it and forget it. We don’t silently reshape responses.

No scraping, no licensing risk — public-domain KJV, zero attribution requirements, commercial-safe.

Free to start — 500 calls/day, no credit card. Production plans scale to 75,000 calls/day.

AI & MCP Server — Plug structured scripture retrieval directly into Claude and other AI agents. The BibleBridge MCP Server exposes every endpoint as a tool call — no parsing layer needed. MCP docs →

Scripture Resolver No API key required

Type any Bible reference — messy, abbreviated, or compound — and see it resolved instantly.

Examples:

Normalized Reference

—

Canonical OSIS

—

Confidence

—

Full Resolver Playground →

Licensing-Safe Verified public-domain Scripture with no attribution or link-back requirements. Suitable for commercial, institutional, and ministry use. Legal & Provenance

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500 free calls per day — no credit card required. Production plans up to 75,000 calls/day.

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Bible API Built for AI

Cross-References with Strength Weights

A Theological Knowledge Graph

Why devs choose BibleBridge

Scripture Resolver No API key required

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