catholic
On this reading the 'rock' is Peter himself: Christ founds the Church's enduring primacy on Peter's person and office, a primacy carried forward by his successors.
- Pastor Aeternus (First Vatican Council, 1870) · Chapter 1
The trust thesis
The trust layer for Bible study.
Every other tool asks you to trust its answer. pericopa hands you the citation instead — the named source a reference came from, the tradition that holds it, and the points where editions diverge — so the trust is something you can open, not something you take on faith.
Asserted vs openable
Incumbents assert trust; pericopa hands you the citation.
AI Bible tools state that their answers are trustworthy, but you cannot open one back to its source. pericopa makes the opposite trade: every reference it surfaces is openable to the named edition and source it came from, so its core promise is demonstrable on each result rather than asserted in a tagline. Where pericopa holds no position, it says so plainly.
The reference spine
Real verses, real editions, real interpretations.
pericopa references; it never produces. The same rule runs through all three layers of study — and each layer is held as attribution, never authored.
- 01
Real verses, never written
A reference resolves to a real verse held in a named edition, not a sentence a model composed. Retrieval surfaces what already exists; it does not invent.
- 02
Real editions, never altered
Each edition's words are held as-is, so where two editions diverge in wording or numbering, pericopa marks the divergence and leaves both readings standing.
- 03
Real interpretations, never authored
A tradition's reading of a verse is referenced and attributed to a named source — pericopa surfaces what a tradition holds, never its own reading of the text.
An openable example, not a bare claim
One fork verse, two traditions, each attributed.
Below is a real divergence record from pericopa's doctrine model: Matthew 16:18 read two ways, each summary attributed to a public-domain source you could open. The point is not which reading is held — it is that the reference carries its source.
Matthew 16:18
reformed
On this reading the 'rock' is the faith Peter confessed ('Thou art the Christ'), not Peter's person; the Church is built on Christ as confessed, and every believer who shares that confession stands on the same rock.
- Commentary on a Harmony of the Evangelists — John Calvin · On Matthew 16:18
- Institutes of the Christian Religion (1559) — John Calvin · Book IV, ch. 6
Rendered at build time from @pericopa/doctrine — the positions and citations are the model's data, not page copy.