The central conclusion of the study is that Tertullian’s descriptions of Marcion’s texts require examination as historical testimony; they cannot automatically be promoted into a record of personal inspection. His quotations give us evidence about readings attributed to Marcion, together with the arguments Tertullian builds around them. Establishing how he obtained a particular reading is a further historical task.

The earlier post examined twenty-two examples against a broader comparison of 904 indexed Gospel and Pauline clusters throughout all five books of Adversus Marcionem. Those clusters include quotations, paraphrases, narrative references, allusions and references to books or collections. Their number is not a count of verbatim transcriptions or proven errors. The important result concerns the character of the evidence: precise textual allegations coexist with abbreviation, variable Latin rendering, mixed material and theological inference.

By eyewitness here I mean someone who personally inspected the relevant Marcionite books. The comparison does not establish that Tertullian never did so. It establishes that personal inspection of a complete collection cannot simply be assumed from the confidence with which he accuses Marcion of corruption.

1. Knowledge of a reading and direct inspection are separate questions

Tertullian sometimes reports a very specific difference. His discussion of Ephesians 3:9 identifies the preposition in as the point at issue. He contrasts a mystery hidden in God with the reading he attributes to the heretic, in which the omission changes the sense to hidden from God (Adversus Marcionem V.18.1–3). This is detailed textual testimony and deserves serious attention.

The detail tells us what difference Tertullian alleges. It does not, by itself, tell us how he learned of it. A manuscript, an excerpt, a report from another reader or an earlier polemic could all communicate a small verbal difference. The precision of the information and the route by which it reached him must be evaluated separately.

A precise allegation is stronger evidence for the particular reading reported than for a particular scene of document inspection. A reconstruction should preserve that distinction instead of allowing the first claim to settle the second.

2. An accusation of erasure can incorporate theological inference

The discussion associated with Matthew 5:17 is especially revealing. Tertullian argues that Jesus’ instruction to the healed leper agrees with the law. He then reasons that Jesus could have prefaced the instruction with the saying that he came to fulfil the law. The argument culminates in this statement (Adversus Marcionem IV.9.15):

Constat ergo dixisse illum, quia et fecit

“It is therefore established that he said it, because he also did it.” Tertullian goes on to charge Marcion with removing the utterance rather than admitting that his own side inserted it. The reasoning explicitly offered proceeds from Christ’s action, as Tertullian interprets it, to a conclusion about the saying and its erasure.

He may have had additional textual information. The paragraph nevertheless does not supply a report of a manuscript comparison. Its expressed argument cannot be replaced with an unstated eyewitness observation. This is a concrete reason to distinguish an alleged deletion from the evidence offered to establish it.

3. A missing phrase in Tertullian is not sufficient evidence for a missing phrase in his source

The Ephesians 2:20 comparison provides a particularly effective control. In Book IV, Tertullian invokes Paul and quotes the foundation of the apostles without adding the prophets (Adversus Marcionem IV.39.6). In Book V, he quotes the apostles clause and then declares (Adversus Marcionem V.17.16):

Abstulit haereticus, Et prophetarum

“The heretic removed, ‘and prophets.’” The shorter wording therefore occurs in Tertullian’s own earlier citation as well as in the form he later condemns. The earlier citation does not explain whether its brevity comes from abbreviation or its source.

This observation does not prove that the earlier citation came from a Marcionite copy. It does not prove that he used a longer copy either. It shows why the omission alone cannot discriminate between those possibilities. Absence from a patristic quotation and absence from a manuscript are different claims. Every reconstruction that infers a shorter text from a shortened citation must address this problem.

4. Verbal variability does not decide whether a manuscript was present

Galatians 4:4 appears in two forms within Book V. At Adversus Marcionem V.4.2, Tertullian writes:

Cum autem evenit impleri tempus, misit deus filium suum

At Adversus Marcionem V.8.7, the temporal construction changes:

At ubi tempus expletum est misit deus filium suum

The fulfilment-of-time construction differs, while the sending clause remains the same. First Corinthians 15:50 likewise appears with non possidebunt, non consequentur and consequi non possunt (Adversus Marcionem V.10.11; Adversus Marcionem V.10.15; Adversus Marcionem V.14.4). These are demonstrably variable Latin formulations.

A writer consulting a Greek manuscript can translate or restate the same sentence in different Latin. A writer using notes or memory can do the same. The variations weaken the assumption of verbatim reproduction; they do not identify the source of the information. Assigning each formulation to a different Greek exemplar, or concluding that no exemplar was consulted, would require additional evidence.

5. The identity of the comparison text must be established locally

The sword/division passage shows why a reconstruction cannot assume that every accusation compares Marcion with a text otherwise identical to canonical Luke. At Adversus Marcionem IV.29.13, Tertullian gives the division saying and then says that sword is what is written, but Marcion corrects it. Yet sword and division also distinguish the received parallels in Matthew 10:34 and Luke 12:51.

The passage makes the comparator a question requiring investigation. Memory, a harmonized comparison or other textual material could be relevant. The accusation itself does not establish which explanation is correct, nor does it establish that Marcion invented the Lukan wording.

A modern verse coordinate identifies a correspondence; it does not independently establish an ancient book’s title, wording or history. The same restraint applies when a saying with a Matthean counterpart is said to have been removed from the Gospel attributed to Marcion. The accusation cannot supply all the missing steps in the history of that Gospel.

6. Direct access, faithful reproduction and access to the complete collection are distinct claims

The expression “Tertullian had Marcion’s canon before him” can conceal several propositions. It may mean that he consulted a Marcionite Gospel, that he consulted a Pauline collection, that both were available throughout composition, that he reproduced them faithfully, or that the copies represented Marcion’s own edition. These propositions do not stand or fall together.

Consultation of one book would not establish consultation of every book discussed. Consultation at one stage would not establish that the book remained open during every later quotation. Even a demonstrably Marcionite copy would leave its date, provenance and relationship to Marcion’s own editorial work to be investigated.

The collection reports remain valuable. At Adversus Marcionem V.21.1, Tertullian contrasts the acceptance of Philemon with the rejection of two letters to Timothy and one to Titus. That testimony concerns the collection he attributes to his opponent. It does not narrate the circumstances in which he acquired the information. Reports about membership in a collection, reports about individual readings and claims of direct inspection need separate evidentiary judgments.

7. A coherent polemical purpose can coexist with flexible citation and interpretation

Across the passages compared, Tertullian’s defence of the Creator, continuity with prophecy and bodily resurrection remains recognizable. His arguments are often more stable than his wording. This helps explain why several verbal forms can serve one purpose, without making every difference a change of doctrine.

The discussion of the god of this age is a useful example. Tertullian first proposes a punctuation that supports one interpretation, then expressly allows the simpler interpretation identifying the figure with the devil (Adversus Marcionem V.11.9–11). His later use of the devil interpretation (Adversus Marcionem V.17.9) consequently recalls an alternative already offered. It need not represent an unnoticed reversal.

This flexibility also limits what we can extract as the wording of a document. An explanatory clause, an opponent’s objection and a hypothetical consequence do different work. The stable purpose of the polemic does not guarantee a stable quotation form, and a change of quotation form does not by itself demonstrate a change of belief. Neither fact establishes fabrication.

8. Reconstruction requires a stated chain of evidence

The responsible outcome is to describe what supports each proposed reading. An explicit contrast, such as the disputed preposition in Ephesians 3:9, has a different status from a clause inferred to be absent because Tertullian does not quote it. A reported inventory has a different status from a conjecture about Marcion’s motive. A Latin synonym has a different status from a specified change of letters.

The chain of reasoning should therefore remain visible: the wording of the received polemic; the identification of its speaker; the separation of quotation from explanation; the reading attributed to the opponent; and the grounds for inferring its source and history. Independent corroboration can strengthen a claim, provided the independence of the witnesses is itself assessed. Agreement between two writers cannot simply be counted twice if their information may share a source.

The study establishes the need for these controls. It does not prove exclusive dependence on an earlier polemic, identify a particular intermediary, or demonstrate that Tertullian never handled a Marcionite manuscript. Those remain historical questions to be investigated with evidence beyond the citation differences themselves.

The historical claim that remains defensible

Tertullian is a witness to readings attributed to Marcion and to the arguments constructed around them. Some reports are specific and potentially very valuable. Others are abbreviated, interpretive, composite or entangled with the transmission of Tertullian’s own work. The comparison gives us reasons to distinguish their evidentiary weight.

What it does not give us is a demonstrated scene in which the complete collection, accurately representing Marcion’s own edition, lies open before Tertullian while he transcribes it. That scene cannot be used to guarantee the quotations whose character is supposed to establish it.

Tertullian’s status as a direct inspector of Marcion’s complete collection must be demonstrated independently of the mere fact that he accuses Marcion of corrupting Scripture. His testimony retains its historical importance. Its source, precision and scope must be earned at the particular passages where the evidence survives.

Primary passages discussed

The examples above are drawn from the comparison developed in The Myth of Tertullian’s Eyewitness of Marcion’s Canon. Latin quotations retain the wording used in that study; the English explanations are newly written. The Latin Library text credits Ernest Evans (1972), transcribed by Roger Pearse (2002).