Let's be real. Secret Mark need not disprove the Farrer hypothesis to disturb its promise of a clean solution. It need only introduce a history of Gospel composition and circulation that the familiar relationships among four surviving books cannot adequately describe.
That is the argument I want to make. An authentic Letter to Theodore would introduce additional questions: Which Mark? How many compositions circulated under that name? When were they produced? Who encountered them? How do their contents relate to the texts that survived?
A verdict of modern forgery removes that particular witness from the discussion. The resulting reconstruction has fewer complications.
My suspicion is that the attraction of preserving a clean solution helps explain some of the confidence surrounding the forgery verdict. That is an interpretation of the controversy. Whether it explains a particular scholar’s judgment requires evidence about that scholar’s arguments.
There is nothing inherently objectionable about preferring a simple explanation. A good explanation should account for the evidence economically. The difficulty begins when simplicity becomes a condition imposed on the evidence—when a reconstruction’s elegance becomes a reason to resist complications that deserve investigation.
A hypothesis becomes an ideology when protecting its completeness takes precedence over testing its adequacy.
Austin Farrer supplied a remarkably explicit statement of the ambition at issue. At the conclusion of “On Dispensing with Q,” he predicted:
“The whole literary history of the canonical Gospel tradition will be found to be contained in the fourfold canon itself.”
This appears on page 85 of his foundational essay, published in 1955. Farrer immediately qualified it by allowing the influence of the Old Testament, the Pseudepigrapha, and other New Testament writings. He also expressly allowed oral tradition.[1]
The qualification concerning oral tradition does not remove the significance of his prediction. Farrer envisioned a literary history in which Matthew amplified Mark, Luke used Mark and Matthew, and John presupposed all three. Additional lost Gospel sources would prove unnecessary.
He acknowledged that he had not supplied a complete demonstration. His concluding vision was a prediction about what further investigation would establish.
That distinction deserves preservation. A prediction invites testing. Once its fulfillment is treated as a requirement, it begins to constrain what investigators are prepared to discover.
The basic Farrer hypothesis is narrower than this comprehensive vision. Matthew’s use of Mark and Luke’s subsequent use of both can remain plausible even if other Gospel texts circulated. Consequently, an authentic Theodore need not destroy the central relationships proposed by Farrer.
It could nevertheless disturb the larger attraction: the prospect of explaining the relevant literary development through texts already in our possession.
A solution can retain its principal claims while becoming less complete, less exclusive, and more dependent on historical qualifications. That is the sense in which Secret Mark could make Farrer messy.
Clement’s undisputed writings already give us a reason to investigate the relationship between a Gospel’s name and its quoted contents.
In Quis dives salvetur, Clement presents an extended quotation of Jesus’s encounter with the rich man. Afterward, he identifies his source:
“These things stand written in the Gospel according to Mark.”
This is QDS 5.1. Clement then acknowledges differences of wording among the other recognized Gospel accounts while maintaining their agreement in meaning.[2]
The attribution belongs to Clement. A modern editor has not merely recognized a resemblance and supplied “Mark” in the margin.
Yet Clement’s quotation includes εἰ θέλεις τέλειος εἶναι, “if you wish to be perfect.” This wording appears in Matthew 19:21 and is absent from the corresponding passages in our standard texts of Mark and Luke.
| Witness | Jesus’s loving look | Condition concerning perfection |
|---|---|---|
| Mark 10:21 | Present | Absent |
| Matthew 19:21 | Absent | Present |
| Luke 18:22 | Absent | Absent |
| Clement, QDS 4.7 | Present | Present |
The quotation attributed to Mark combines Mark’s loving look with the perfection condition familiar from Matthew.[2]
Clement subsequently returns to the perfection condition in QDS 10.1. It supports his interpretation of the man’s incompleteness and freedom of choice. The condition therefore belongs to the transmitted exposition as well as to its opening quotation.[3]
Several explanations remain possible. Clement might have harmonized Matthew and Mark while quoting. He might have inherited an already combined form. His Gospel manuscript might have contained harmonizing readings. The transmission of QDS itself also requires consideration.
Harmonization may prove the best explanation. But the term identifies a process; it does not, by itself, establish who performed it or when. Those historical questions remain.
The example has a clear limitation: Luke does not reproduce the perfection condition. It is not a Matthew–Luke agreement against Mark and cannot itself explain one.
Its significance lies elsewhere. Clement names Mark while presenting wording that does not correspond precisely to the boundaries of our surviving Gospel texts. His attribution and his wording must be considered together.
The discrepancy is a small piece of historical mess. It becomes more consequential when placed beside a document that expressly describes different Markan compositions.
Clement’s broader use of named Gospels supplies useful context. In Stromata 2.9.45, he identifies the Gospel according to the Hebrews when citing a saying about wonder, kingship, and rest. In Stromata 3.13.93, he distinguishes the four received Gospels from the Gospel according to the Egyptians, locating a saying used by Cassianus in the latter.[4]
Clement could recognize a privileged fourfold collection while discussing Gospel literature outside it. The boundaries of his received collection did not exhaust his knowledge of Gospel writings.
These references do not demonstrate that the additional Gospels contributed to canonical composition. They establish the broader literary setting in which his references to Mark need to be examined.
The Letter to Theodore supplies a much more particular claim.
Its author describes an initial account composed by Mark at Rome during Peter’s lifetime. Following Peter’s martyrdom, Mark allegedly traveled to Alexandria with his own notes and Peter’s and expanded his earlier work. The letter distinguishes this composition from a version corrupted through Carpocratian additions.[5]
The author also supplies extracts and identifies their positions within the Markan narrative. One follows the passion prediction ending at Mark 10:34 and precedes the approach of James and John at 10:35. It concerns the raising of a wealthy youth and his subsequent instruction. A shorter extract follows the arrival at Jericho within Mark 10:46.[5]
The evidence is concentrated in the same chapter:
| Location in Mark | Clementine evidence |
|---|---|
| 10:17–31 | The rich man episode quoted in QDS |
| After 10:34 | The longer extract quoted in Theodore |
| Within 10:46 | The shorter extract quoted in Theodore |
This proximity invites comparison, especially between the rich man who departs and the wealthy youth who remains for instruction. It does not establish that they are the same character or that QDS used the expanded composition.
The cumulative significance is more precise. An authentic letter would add explicit Clementine testimony about different Markan compositions to the unusual named quotation in QDS.
The two works would not become independent witnesses merely because they are separate writings. They would offer different kinds of evidence from the same author: a quotation attributed to Mark and an account of Markan expansion.
Even then, Clement’s authorship would not automatically establish the accuracy of every historical claim in the letter. His knowledge of an expanded Gospel and his explanation of its origin would require separate evaluation.
The letter also describes expansion of an earlier work. It does not say that canonical Mark resulted from abbreviating the longer composition. That reconstruction requires further argument.
These distinctions produce a more complicated investigation. That is precisely the point.
The question would no longer be exhausted by identifying relationships among the surviving four Gospels. Investigators would also have to establish where another Markan composition belonged and whether it affected any of those relationships.
An expansion produced after Matthew and Luke might leave their literary relationship untouched. An earlier edition containing relevant material could affect particular arguments about their agreements. A relationship with John would require a further inquiry into the direction of dependence.
None of these possibilities can be settled merely by announcing that another Mark existed. Equally, the desire for a complete solution among surviving texts cannot settle them in advance.
How closely do Goodacre, Carlson, and Olson actually embrace Farrer’s comprehensive prediction?
The answer requires distinctions.
| Writer | Position supported by the writings examined |
|---|---|
| Farrer | Explicitly predicts that the canonical Gospel tradition’s literary history will be contained within the fourfold canon, with stated exceptions. |
| Goodacre | Defends explanations through dependence on surviving Gospels, accepts oral tradition, and acknowledges that lost documents can be legitimate hypotheses. |
| Carlson | Presents Farrer as dispensing with Q through Luke’s use of Matthew. I can't locate an equivalent blanket declaration of four-Gospel sufficiency. |
| Olson | Explicitly supports Markan priority and Luke’s use of Matthew. I can't locate an equivalent blanket declaration. |
Carlson’s overview explains Farrer through the plausibility of Luke’s use of Matthew. Olson’s account similarly identifies the sequence Mark–Matthew–Luke and the use of earlier Gospels by later evangelists.[6]
These statements do not establish that either author excludes every additional written source. Membership in a scholarly camp cannot substitute for examining what its members claim.
Goodacre’s qualifications are particularly important. His FAQ rejects the assumption that dispensing with Q necessarily means dispensing with all other sources. He allows Luke to interact with oral traditions alongside Mark and Matthew.[7]
That concession does not answer every question about an additional written Mark. Farrer himself accepted oral tradition while making his broader prediction about literary sources.
Goodacre directly addresses revised Markan sources in the same FAQ. Discussing a proposed deutero-Markus, he writes:
“Our only witness to its existence is the phenomenon of the minor and major agreements between Matthew and Luke against Mark.”
He prefers Luke’s knowledge of Matthew as the simpler explanation.[7]
An authentic Theodore would not establish the particular document required by that alternative theory. Its extracts cannot simply be expanded into whatever source a reconstruction needs.
It would, however, provide external testimony to another Markan composition. The general possibility of Markan plurality would then have evidence beyond modern attempts to explain Gospel agreements. Investigators would have to distinguish that testimony from the specific contents and chronology proposed for a reconstructed source.
Goodacre himself supplies an appropriate methodological standard. In “The Synoptic Problem: John the Baptist and Jesus,” he acknowledges the loss of numerous ancient texts and argues that Q’s hypothetical status cannot, by itself, count against its explanatory plausibility. Detailed comparison must decide the issue.[8]
That standard should apply to alternative Markan compositions too. A preference for surviving sources remains reasonable when it follows comparison. It becomes restrictive when survival determines the range of acceptable explanations.
Goodacre’s 2025 book, The Fourth Synoptic Gospel, extends his investigation to John’s knowledge of Matthew, Mark, and Luke. Explaining its significance, he describes our ability to identify “three of John’s literary sources.” That wording does not claim they were John’s only sources.[9]
His research thus resembles an important part of the sequence Farrer anticipated without necessarily endorsing the entirety of Farrer’s prediction.
There is also a separate Clementine problem concerning Gospel order. Eusebius preserves a report from Clement’s Hypotyposeis commonly read as placing the Gospels containing genealogies before Mark. Carlson proposes that the disputed wording concerns public promulgation rather than chronological priority.[10]
That proposal deserves assessment through its linguistic and contextual arguments. Its compatibility with a preferred source theory does not decide whether it is correct.
The same distinction governs the forgery controversy.
Goodacre’s early confidence was striking. In May 2005, after reading a draft of Carlson’s work, he described it as “an utterly convincing case” and subsequently expressed surprise that anyone could continue seriously to maintain the letter’s authenticity.[11]
He later explained that he endorsed Carlson because he had examined the argument against the background of other scholarship and found it persuasive. He expressly resisted explanations based on ignorance or prejudice.[12]
That stated explanation must be addressed. A potential theoretical advantage does not establish that it caused his judgment.
Olson likewise distinguishes his analysis from Carlson’s specific attribution of the forgery to Morton Smith. In his discussion of the letter’s rhetorical function, he explicitly says he lacks the proof required to establish Smith’s authorship.[13]
A serious criticism must preserve these differences. Carlson’s attribution, Olson’s account of literary function, and Goodacre’s endorsement involve different arguments. They cannot be refuted collectively through a speculation about their shared theoretical sympathies.
What they can be asked collectively is whether their preferred reconstruction remains open to complications that do not fit its initial economy.
This is where the distinction between a hypothesis and an ideology becomes useful. A hypothesis can accommodate the discovery that its central relationships belong within a more complicated history. An ideology treats the preservation of the original picture as an intellectual obligation.
The danger arises when every relevant anomaly is assigned, without sufficient examination, to a category that leaves the preferred reconstruction untouched: harmonization, secondary expansion, imitation, or modern forgery.
Each of those explanations can be correct. The issue is how the choice is made. A reconstruction earns its simplicity by explaining the evidence; it cannot earn it by excluding inconvenient evidence because the result would be complicated.
This applies equally to defenders of Theodore. Authenticity cannot be assumed because an expanded Mark would be useful to their own theories. Nor can the missing portions of a Gospel be supplied imaginatively to solve every difficulty with Farrer.
The interpretive obligations run in both directions.
Clement’s quotation does not demonstrate that Matthew and Luke used an alternative Mark. An authentic letter would not automatically demonstrate it either. Specific arguments for Luke’s use of Matthew—including arguments about arrangement and editorial fatigue—would still require specific answers.[14]
But these limitations do not make the evidence irrelevant. They define the work required to integrate it into a historical reconstruction.
That is what a modern-forgery verdict removes: the obligation to explain Theodore as ancient testimony. It does not remove the unusual quotation in QDS. It does not establish that the surviving Mark exhausts the Markan forms relevant to early Christian literature. It does not turn Farrer’s prediction into a demonstrated history.
My contention is that a clean solution has an intellectual appeal beyond the strength of its individual arguments. It promises completion. The major documents are available; their relationships can be diagrammed; further discoveries can be fitted around an established sequence.
An authentic Theodore would interrupt that sense of completion. It would require another investigation into the identity, contents, and circulation of a foundational Gospel.
That complication might ultimately leave Luke’s use of Matthew intact. It might even strengthen some existing conclusions. What it would remove is the confidence that the necessary literary history has already been contained within the surviving four.
This is the potential bias identified by the title. The desire for a clean solution can make a verdict that removes complications especially attractive. Demonstrating that influence in individual cases requires close scrutiny of the arguments, their evidential standards, and their treatment of alternatives.
Secret Mark need not destroy Farrer to disturb its acolytes. It need only remind them that a persuasive solution to certain literary relationships may still leave a substantial history unexplained.
Farrer’s comprehensive prediction must remain answerable to that history.
References and textual notes:
Austin M. Farrer, “On Dispensing with Q”, in D. E. Nineham, ed., Studies in the Gospels: Essays in Memory of R. H. Lightfoot (Oxford: Blackwell, 1955), 55–88, especially 85. The quoted prediction must be read with its stated exceptions and acknowledgment of oral material.
Clement, Quis dives salvetur 4.7; 5.1. Greek in Otto Stählin, ed., Clemens Alexandrinus, vol. 3, GCS 17 (Leipzig: Hinrichs, 1909), 162–63; Greek text. Compare Mark 10:21, Matthew 19:21, and Luke 18:22. Brief English renderings above are supplied from the Greek.
Clement, QDS 10.1, Stählin, 165; Greek transcription. The infinitive here is genesthai, whereas 4.7 has einai. Arguments concerning the quotation should use the Greek; details in older English translations do not always correspond to Stählin’s printed text.
Clement, Stromata 2.9.45.5, English translation, chapter 9; 3.13.92–93, Stählin, Clemens Alexandrinus, vol. 2, GCS 15 (1906), 238–39; Greek transcription. The discussion relies on the latter page’s Greek, rather than its generated English translation.
Letter to Theodore 1r.15–1v.9; 1v.20–2r.16. Edition, photographs, and translation in Morton Smith, Clement of Alexandria and a Secret Gospel of Mark (Cambridge, MA: Harvard University Press, 1973), 446–52; Smith’s translation reproduced online. Attribution to Clement remains disputed.
Stephen C. Carlson, “Overview of Proposed Solutions”, section on Farrer, and “Synoptic Problem FAQ,” §4; Ken Olson, “Welcome to my blog”. The findings concern the writings examined, rather than every publication by these authors.
Mark Goodacre, “Frequently Asked Questions on the Case Against Q”, especially the discussions of Ur-Marcus, deutero-Markus, and other sources.
Goodacre, “The Synoptic Problem: John the Baptist and Jesus”, in Andrew B. McGowan and Kent Harold Richards, eds., Method and Meaning: Essays on New Testament Interpretation in Honor of Harold W. Attridge (Atlanta: Society of Biblical Literature, 2011), 177–92, especially 187.
Goodacre, The Fourth Synoptic Gospel: John’s Knowledge of Matthew, Mark, and Luke (Grand Rapids: Eerdmans, 2025); B. J. Oropeza, “The Fourth Synoptic Gospel: An Interview with Mark Goodacre”.
Eusebius, Ecclesiastical History 6.14.5–7, reporting Clement’s Hypotyposeis; Carlson, “Clement of Alexandria on the ‘Order’ of the Gospels”, New Testament Studies 47 (2001): 118–25, especially 122–25.
Goodacre, “Stephen Carlson and Secret Mark,” May 12, 2005, and “More Secret Mark,” May 13, 2005. Carlson’s book appeared as The Gospel Hoax: Morton Smith’s Invention of Secret Mark (Waco: Baylor University Press, 2005).
Goodacre, “Tony Chartrand-Burke on Secret Mark at the SBL,” December 4, 2008.
Ken Olson, “Tinker Tailor Soldier Forger,” including his clarifying comment, reproduced with permission by Neil Godfrey, June 23, 2020.
Goodacre, “Fatigue in the Synoptics”, New Testament Studies 44 (1998): 45–58, especially 54–58.




