7/12/2026 – From Claude.ai
Comparative Canon Lists: Marcion to Trent
I. Marcion’s Canon (Evangelion + Apostolikon)
- Date: c. 140 CE
- Scope: Sectarian, closed list — earliest of its kind for a Christian group
- Old Testament: Rejected entirely — Marcion held the OT to reveal the inferior Creator-God, not the Father of Jesus
- New Testament: One edited Gospel (a purged form of Luke) plus ten Pauline epistles, excluding the Pastorals (1–2 Timothy, Titus)
- Notable features: Purged Jesus’s connection to the OT and the Creator; excised the infancy narratives and other Judaizing material. Widely regarded as the catalyst that forced the wider Church to begin articulating its own canon. (Kong Stephen Castro; Bart Ehrman Blog)
II. Muratorian Fragment
- Date: c. 170–200 CE (some argue as late as the 4th century)
- Scope: Roman/Western list, explicitly written against Marcion and the Gnostics
- Old Testament: Not preserved in the surviving fragment (may originally have had an OT section)
- New Testament: 4 Gospels, Acts, 13 Pauline epistles, Jude, 1–2 John, Revelation; excludes Hebrews, James, 1 Peter, 3 John; flags 2 Peter and the Apocalypse of Peter as disputed; explicitly rejects Marcionite forgeries (a fabricated “Letter to the Alexandrians” and “Letter to the Laodiceans”)
- Notable features: Earliest surviving attempt at a “catholic” (non-sectarian) canon list; the polemic against Marcion runs through the document. (Wikipedia; Ehrman Blog)
III. Origen (Homilies on Joshua, etc.)
- Date: c. 240s CE
- Scope: Personal/scholarly listing, not conciliar
- Old Testament: Septuagint-based, broader than the Hebrew canon
- New Testament: Effectively the 27-book NT, though Revelation is not explicitly listed here (Origen affirms it elsewhere)
- Notable features: Possibly the earliest witness closest to the eventual 27-book NT. (Wikipedia – Development of NT Canon)
IV. Athanasius, 39th Festal Letter
- Date: 367 CE
- Scope: Episcopal/pastoral letter, Alexandria (Eastern)
- Old Testament: 22 books per Hebrew count; includes Baruch and the Letter of Jeremiah folded into Jeremiah; excludes Esther from the primary list
- New Testament: The familiar 27 books, in an order differing slightly from today’s (Hebrews placed among the Pauline letters)
- Notable features: First surviving list matching the eventual 27-book NT exactly; first use of the Greek term kanonizomena (“canonized”). Distinguishes a secondary tier “appointed… to be read” — Wisdom, Sirach, Esther, Judith, Tobit, the Didache, and the Shepherd of Hermas — from the fully canonical books. (Wikipedia – Easter Letter; The Scriptorium)
V. Council of Rome (under Damasus I)
- Date: 382 CE
- Scope: Regional Western council (its canon list survives via the possibly later Decretum Gelasianum)
- Old Testament: 73-book Catholic OT (including deuterocanon)
- New Testament: 27 books
- Notable features: If the Gelasian attribution holds, this is the earliest council-level list matching the later Tridentine canon exactly. (Restless Pilgrim; Wikipedia)
VI. Synod of Hippo / Councils of Carthage
- Date: 393 / 397 / 419 CE
- Scope: Regional North African councils, under Augustine’s influence
- Old Testament: Broader OT including deuterocanonicals
- New Testament: 27 books, ratifying Athanasius’s list
- Notable features: Regarded the canon as settled; these are regional, not ecumenical, decisions — a point often stressed in critical scholarship, since no ecumenical council had yet ruled on the matter. Pope Innocent I’s 405 letter to Exsuperius of Toulouse gives an identical list. (Islamic Awareness survey; Wikipedia)
VII. Council of Florence (Session 11, Bull Cantate Domino)
- Date: 4 February 1442
- Scope: First ecumenical-level ratification of the full Catholic canon (union council with Eastern churches)
- Old Testament: Full 46-book Catholic OT including deuterocanon
- New Testament: 27 books
- Notable features: Trent’s Session 4 in 1546 essentially reaffirmed this list verbatim, closing debate that had reopened with the Reformation. (Wikipedia – Canon of Trent)
VIII. Luther’s Bible
- Date: 1522 (NT) / 1534 (complete)
- Scope: Protestant, non-conciliar — one reformer’s editorial judgment
- Old Testament: Hebrew/Aramaic canon only; deuterocanonical books moved to a separate “Apocrypha” section, useful but not authoritative for doctrine
- New Testament: 23 books numbered as authoritative in sequence; Hebrews, James, Jude, and Revelation placed at the end, unnumbered, with prefaces expressing doubt about their apostolic authority
- Notable features: Luther’s test was was Christum treibet (“what promotes Christ”); on this basis he questioned the four books’ canonicity, though he did not remove them from his Bible outright. (Islamic Awareness survey)
IX. Council of Trent, Session 4 (De Canonicis Scripturis)
- Date: 8 April 1546
- Scope: First time canon contents were made a dogmatic article of faith under anathema [Anathema means something or someone hated or avoided, or a formal excommunication by a church. ]
- Old Testament: Full 46-book OT (deuterocanon included), matching Florence 1442
- New Testament: 27 books
- Notable features: Vote: 24–15, with 16 abstentions. Directly answers both Luther’s demotion of the four NT books and his relegation of the deuterocanon to Apocrypha. Also declares the Vulgate the authentic text for public use. (Wikipedia – Canon of Trent; Wikisource, Session IV)
A note relevant to the Marcion-priority discussion: the standard sequence above — Marcion (c. 140) provoking a reactive “catholic” canon-formation process culminating in the Muratorian Fragment and then Athanasius — is itself the conventional narrative that scholars like Vinzent and Klinghardt push back against. Their argument (that Marcion’s Gospel and Apostolikon may reflect an earlier textual stage rather than a secondary redaction of proto-canonical texts) has implications for how this whole outline should be read: on the “Marcion priority” model, the Muratorian Fragment’s anti-Marcionite framing would represent a later polemical retrofit rather than a response to a straightforwardly derivative heretic. Happy to build out a comparison specifically contrasting the conventional (Harnack/Tyson-adjacent) and revisionist (Vinzent/Klinghardt/BeDuhn) accounts of the Luke–Marcion textual relationship if that would be useful
