Was the Gospel of Barnabas a Late Fabrication?

The Gospel of Barnabas arrives with its verdict already written: late medieval, the judgment runs, or early modern at best — and therefore of little value as a witness to early Christian history. Pull that verdict apart, however, and it rests on no single proof. It is stitched together from several different kinds of claim, which fall into three broad families.

The first concerns the manuscripts themselves. The surviving Italian and Spanish witnesses are late, and no continuous public manuscript chain is presently known. The second turns inward, to features inside the text — alleged anachronisms, Gospel-harmony patterns, literary echoes, currency terms, jubilee references, and other details said to fit a later European setting. The third is a question of historical plausibility. A Gospel this strongly anti-Trinitarian, whose emphases often appear compatible with Qur’anic and broader Abrahamic readings, strikes many readers as a late polemical fabrication — perhaps the work of a Morisco, a Muslim, or a post-medieval Christian hand.

The question worth pressing is whether those three lines really establish that the work began, as a whole, as a late fabrication — or whether they point instead to something longer and more complicated: a history of transmission, translation, and redaction.

Europe: The Inquisition’s Silence Is Striking

The real puzzle cuts deeper than whether anyone ever formally banned the book. Imagine a work that openly attacked Paul, denied the crucifixion, rejected Trinitarian doctrine, and challenged the authority of the later Church. If such a work had entered visible circulation within Rome's reach, one might expect it to have left some mark: a denunciation, an order of suppression, an investigation, or formal proceedings preserved somewhere in the record. Yet remarkably little appears to have survived.

The Islamic World: No Wall, but Contact

This was never a world of sealed religious compartments. Muslims, Christians, and Jews lived side by side — often, for long stretches, in peace — in markets, bazaars, and the ordinary traffic of daily life. Ideas crossed those lines. So did manuscripts.^[27][29]

Picture the scale. For long periods, the Ottoman world included or bordered the Balkans, much of Hungary, Bosnia, Serbia, and the lands reaching towards Vienna. It was a region of shared frontiers, mixed populations, trade routes, imperial rivalry, and sustained contact — with the Ottoman Empire standing at its centre as one of the great powers of the age.

Historical map · Ottoman world around 1683View larger

That contact was never merely political or abstract. It appeared in daily life: in music, architecture, ornament, folklore, popular culture, and religious expression. Even Christian Arabic versions of the Bible did not develop in a sealed room. They could take colour from their surroundings in language and style and, at times, sound strikingly Qur'anic in tone.^[28] Nor was religious belonging fixed for life. Conversion was a familiar feature of that world and cannot be reduced to coercion alone.^[29]

View largerArabic Gospels, Walters Art Museum, MS W.592 (CC0).

View largerCoptic–Arabic book of prayers, The Met / Wikimedia (CC0 / Public Domain).

If the Gospel of Barnabas had entered substantial circulation in such an environment, it would have had many opportunities to attract notice. It could have travelled through networks of contact, curiosity, rivalry, and debate, reaching readers whose interests pointed in very different directions.

Nor would Barnabas necessarily have been a unique case. History offers many examples of prohibited books crossing political and confessional frontiers rather than remaining confined by the authorities that tried to suppress them. Five such cases are noted in the references.^[30] Had Barnabas circulated steadily along the Europe–Ottoman frontier, its near-absence from the surviving polemical and religious record would still require explanation.

Morisco readers, in particular, would have had an obvious interest in a Gospel understood to foretell Prophet Muhammad. Yet clear evidence that they possessed or used the surviving text remains elusive.

What the Morisco Connection Does and Does Not Show

One theory holds that Moriscos fabricated the Gospel of Barnabas, either during the years of forced baptism or later in exile, perhaps out of resentment or revenge. The Moriscos were the Muslims of post-Reconquista Spain — compelled into baptism, subjected to pressure and surveillance, and eventually expelled in large numbers.

But one distinction has to come first, and much turns upon it: hearing about a book is not the same as writing it. According to the Fra Marino story, the Gospel of Barnabas was removed from the Vatican between 1585 and 1590.^[1] The first presently known reference to a Gospel of Barnabas in a Morisco context, however, dates to around 1634.^[2] Across the forty or fifty years between those reported dates, the name of the book — and its alleged association with a prophecy of Prophet Muhammad — could plausibly have travelled by word of mouth. That would point to later awareness, not authorship. It would show that the text, or its reputation, had become known in that setting, not that Morisco hands had produced it.

Around 1634, Ibrahim al-Taybili, writing in the exiled Morisco milieu of Tunis, refers to Barnabas with the words y asi mesmo en Elanjelio de San Barnabé donde se hallará luz — roughly, Likewise, in the Gospel of Saint Barnabas light will be found there.^[2]

The most cautious reading is also the narrower one: Barnabas may have circulated as a name or report before there is clear evidence that its detailed contents were known in that setting.

Then there is the matter of language. The earliest surviving witness of the Gospel of Barnabas is Italian, whereas Morisco religious writing was chiefly associated with Spanish, Arabic, and especially the aljamiado tradition.^[2][36][37]

What the Morisco evidence shows is awareness of a Gospel of Barnabas around 1634 — not possession of the surviving text, and not Morisco authorship.

What Does This Silence Show?

The conclusion narrows and sharpens. The available evidence does not fit the stronger popular picture of a polemical weapon produced by Muslims and then repeatedly wielded against Christians across several centuries.

To say that Muslims did not know the surviving text is one thing. To say that a Gospel under Barnabas's name had no earlier existence in the Christian world is quite another. There is evidence that such a Gospel was known — at least by title — within the earlier Christian catalogue tradition. The source page Decretum Gelasianum includes the entry the Gospel in the name of Barnabas, apocryphal.^[4] That notice cannot identify the work with the Italian text that survives today. Its importance lies elsewhere: a Gospel title tied to Barnabas was not itself a post-medieval invention.

Neither the Decretum Gelasianum nor the List of the Sixty Books proves that the surviving Italian Gospel is the work they name. But neither notice is irrelevant. Together, they show that a Barnabas-attributed Gospel title circulated within the earlier Christian catalogue tradition.

Set against the thin public trail of the surviving work, these notices are reason enough to look harder — to ask whether the later text preserves some thread of an older Barnabas tradition.

Calling the Gospel of Barnabas a Muslim fabrication may seem easy at first glance. But the stronger version of that explanation must account for how such a book would actually have circulated and why its public and polemical footprint remained so limited before its wider modern publication and translation.

Pressed that far, Muslim fabrication alone appears insufficient as a complete historical account.

Could It Have Been Produced in Europe by Jews or Christians?

If the Muslim-fabrication model cannot carry the whole explanation, another possibility deserves consideration. Could the text have been produced within Europe, in certain Christian or Jewish circles?

It is a serious question. Yet the language of the Gospel of Barnabas, its aims, and the severity of its stance make it difficult to regard it as an ordinary forgery designed to win acceptance within established Christian circles.

A forgery chasing acceptance would normally lean upon recognised authorities, inherited institutions, or familiar doctrine. It would have reason to proceed carefully rather than confront the ruling structure head-on — to take the road most likely to end in recognition. Barnabas often does the opposite.

The question, then, is not simply whether the text came later. It is this: if Barnabas was a later work designed to gain authority within a Christian setting, why does it behave so differently from the forged and pseudonymous works that usually followed that path?

Why Does Barnabas's Open Stance Against Paul Matter?

One of the most arresting things about the Gospel of Barnabas is how early it turns against Paul. The prologue does not hedge or soften. It names Paul, criticises him directly, and presents him as a man who spread false teaching.

The force of that stance becomes clear only when the weight Paul carries is recognised. Thirteen New Testament letters bear his name, and he stands near the centre of the later development of Christian theology.^[7]

Barnabas is therefore taking on more than a minor religious figure. It confronts someone central to the formation of dominant Christianity. That is precisely why its anti-Pauline opening runs against the grain of a convenient forgery aimed at safe or broad acceptance in Latin Christian Europe. To attack Paul so openly would be to choose an unusually costly path.

How Forged and Pseudonymous Works Sought Acceptance

A useful comparison opens here. If Barnabas was a forgery intended to win authority within the Christian tradition, why does it not behave more like the forged or pseudonymous works that sought acceptance there?

Famous medieval cases such as the Donation of Constantine and the Pseudo-Isidorian Decretals reached for legitimacy from inside the tradition.^[8] Related tendencies appear, in different forms, in pseudonymous church-order texts such as the Apostolic Constitutions, the Apostolic Canons, the Didascalia Apostolorum, and the Testamentum Domini.^[10][11]

These works differ in period, genre, and purpose, and they should not all be placed under the word forgery in exactly the same sense. Yet they lean in a similar direction. They build authority from within.

They speak under apostolic names. They attach themselves to bishops, councils, liturgy, or earlier church precedent. They take forms likely to be recognised as legitimate.

Even when such works become polemical, they normally shelter the polemic behind borrowed authority. They do not ordinarily begin by asking readers within the established Church to reject a figure as central as Paul or to abandon the main workings of the inherited religious structure.

Measured against works seeking authority within those structures, Barnabas is an unusual fit.^{[12][13][14][15][35]}

Is There Really a Dante Parallel?

Attempts to connect the Gospel of Barnabas directly to Dante do not hold up well under close examination. The expression usually raised first is dei falsi e bugiardi — that is, false and lying gods. But no strong link between two texts can rest on a single small verbal resemblance. The phrase is not sufficiently distinctive by itself to establish direct dependence; comparable language belongs to a wider religious vocabulary of false gods and deception.^[1]

Nor does the comparison end with that phrase. Barnabas and Dante have also been connected through the nine heavens and their descriptions of hell. Examine those parallels, and the resemblance becomes much thinner.

In Dante, the nine heavens are no vague ninefold scheme. They form a precise system of distinct celestial spheres: the Moon is one heaven, Mercury another, Venus another; likewise the Sun, Mars, Jupiter, and Saturn are each counted as separate heavens. To these are added the Fixed Stars and the Primum Mobile. Dante's structure does not even end at nine. Beyond them all stands the Empyrean, where he places the blessed, the angels, and the presence of God.^[17]

Barnabas paints something else entirely. The first heaven is so vast that the world beside it is reduced, as it were, to dust; the second surpasses the first in the same manner; and the scale climbs upward to the last heaven. Beyond them all comes Paradise, greater than all the heavens.^[16] Yet Barnabas does not identify this Paradise with God. When Peter reaches for that conclusion, Jesus rebukes him openly: Hold thy peace, Peter, for thou unwittingly blasphemest.^[16] The overlap is thin; it rests largely on the presence of the number nine, not on a shared cosmological system.

The same applies to their accounts of hell. Barnabas describes hell through seven regions and seven centres associated with different forms of sin.^[18] Dante's Inferno, by contrast, consists of nine circles.^[19] A sevenfold moral structure does appear in Dante — not in hell, but in the Purgatorio, whose terraces follow the seven deadly sins.^[20] So even here a direct equivalence is hard to sustain: the numbers differ, the structure differs, and the function differs.

Reduced to its essentials, the Dante comparison rests upon a small cluster: one phrase, the number nine, and broadly shared imagery of the afterlife. Yet the cosmologies diverge, the architecture of hell diverges, and so does the tone. Dante's poem is tightly ordered and often satirical; Barnabas is sermonic, weighty, and grave. These parallels are not sufficient to establish direct textual dependence.^[18][19][20]

Linguistic Clues, Gospel Harmonies, and the Question of Academic Consensus

A Gospel harmony, in the sense meant here, combines material from the four canonical Gospels into one continuous narrative. Many popular objections to Barnabas are presented polemically and are taken up in the homepage sections Sailing Toward Nazareth, Seven and Nine Heavens, The Coming Messiah, and Alleged Contradictions on the Homepage. The academic case is narrower. It turns mainly on a small group of observations: the Dante comparison, the jubilee question, alleged linguistic clues, and especially Joosten's claim that Barnabas shares a few readings with Middle Italian gospel harmonies.^[1][5]

The phrase academic consensus therefore needs to be handled with care. It can sound as though hundreds of independent specialists have examined the Gospel of Barnabas in depth and reached the same conclusion. In reality, the specialist literature is relatively small. Most scholars who discuss the surviving work date it late, yet they differ over provenance, method, authorship, and the weight of particular arguments. A relatively small group of writers and a few recurring lines of argument have shaped much of the discussion: the Raggs, later Morisco-origin proposals, Slomp and Sox, Joosten's studies, and the methodological response of Schmid and den Hollander.^{[1][2][39][47]}

These writers are not all doing the same work. The Raggs edited and translated the Vienna manuscript; Sox and Slomp belong to the Morisco-authorship line; Joosten produced the most focused studies of harmony and provenance. Schmid and den Hollander critically examined Joosten's method, especially the risk of using a possible late witness to reconstruct much earlier Diatessaronic readings. None of this renders the studies irrelevant. It means only that each conclusion must be weighed according to the evidence and method that study actually supplies.

The spelling argument rests upon a handful of orthographic details in the printed Italian text: hanno where anno would be expected, and variant forms of immenso splendore. Such details may contribute to the history and provenance of the surviving manuscript. They cannot, on their own, carry a complete theory of authorship, community, or origin.^[48]

Spelling variation and scribal correction are ordinary features of handwritten texts. The Codex Sinaiticus Project notes that the great majority of its corrections concern spelling, and Jongkind records ninety corrections by two scribes on only five surviving leaves of 1 Chronicles.^[49][50] These comparisons do not make Barnabas's spellings irrelevant. They draw a necessary distinction: ordinary orthographic variation is one thing; consistent features capable of identifying a region, period, or scribal background are another. A scattered group of spellings is too narrow a foundation for a complete theory of Morisco authorship.

Joosten reads the wider textual picture differently, and it is important to represent his position accurately. His aim is not to prove that Barnabas is ancient. His reconstruction points instead towards an Italian, probably late-medieval textual environment, and away from Spanish/Morisco authorship. He regards the Morisco hypothesis as attractive but urges caution, gives priority to the Italian text, and concludes that although Barnabas certainly became known in a Morisco milieu, nothing shows that the writing itself began there.^[5] On his reading, the closest textual contacts of Barnabas make better sense within an Italian gospel-harmony environment, especially Venetian and Tuscan harmonies.^[5]

Yet those parallels do not date the whole work. At most, they may connect the surviving Italian form with a textual tradition that preserved readings sometimes described as Diatessaronic or Syriac. Schmid and den Hollander's warning matters precisely here: a possible late witness cannot be used straightforwardly to reconstruct the second-century Diatessaron.^[39] The parallels may illuminate a history of textual transmission, but they do not by themselves carry Barnabas back to Tatian's age.

Joosten's five principal parallels are not long passages or independent historical proofs. They are small shared readings: two masters who are enemies, in the power of Beelzebul, questions and answers, the enemy of man, and sinned against this one.^[5] Each deserves examination, but their scale must remain in view. At most, they may suggest that the surviving Italian Barnabas passed through, or drew upon, a Gospel-harmony layer. They do not prove that the whole work, in all its theological and narrative substance, was invented as a late medieval or Morisco forgery.

Several of these examples also weaken under inspection. The two masters who are enemies reading is not an idea imported from nowhere: the canonical saying itself already contrasts loving one master and hating the other. Second Clement, an early Christian homily usually placed in the second century, reads the same moral contrast through two opposing realities — this world and the world to come.^[40] Likewise, the pull up the weeds wording sometimes mentioned alongside Joosten's examples is not uniquely late Italian. Joosten notes that it also appears in the Persian harmony and in the Gospel of Thomas.^[5][41] These analogues weaken any claim that the readings are unique, although they settle neither the route nor the date by which those readings reached Barnabas.

A similar caution applies to translation. The 1907 English translation by Lonsdale and Laura Ragg makes the principle plain. In their preface, the translators explain that they deliberately retained an archaic style rather than recasting the work into ordinary modern English.^[42] Even so, their own choices of vocabulary and phrasing still enter the translation. Expressions such as the unconscious in chapters 106 and 195, and the sensitive, vegetative, and intellectual soul in chapter 106, do not prove that the Gospel of Barnabas was composed in modern English. Nor is every concept behind them modern.^{[43][44][45][46]} They point to something narrower and more useful: a translation can reveal the idiom and conceptual vocabulary of its translators without fixing the date of every idea it carries.

Known Harmonies and the Test of Function

A fair comparison should begin by asking what known gospel harmonies normally do. Tatian's Diatessaron gave a single narrative shape to material from the four Gospels; Ammonius and Eusebius developed systems for comparing parallel Gospel sections; and early modern harmonies often served as chronological, interpretive, or scholarly arrangements of accepted Gospel material.^[51][52][53] Familiar Gospel wording, then, is not enough on its own. The relation to the canonical Gospels, the aim of the work, and the function of its narrative sequence all have to be weighed. Francis Watson's work on Tatian sharpens the point: even the Diatessaron itself can be discussed as a gospel-like re-presentation of earlier Gospel material in a new narrative form.^[54]

Measured by that test, the harmony case remains suggestive but limited. In places Barnabas stands close to recognisable Gospel material, and those contacts matter. Yet the work does not simply behave like a neutral arrangement of the four canonical Gospels. It places familiar material in different scenes and continuations, at times giving it a different theological burden. None of this settles where Barnabas came from. It does prevent a few close parallels from masquerading as a complete explanation.

How Repetition Becomes a Verdict

The Verdict Often Arrives Before Reading

In a great deal of apologetic and polemical writing, a small group of claims is repeated until it hardens into an assumed verdict: Barnabas is late, inconsistent, and contradicts the Qur'an; therefore, it must be forged.

The pattern is easy to recognise. Acts reports that Barnabas and Paul had a sharp disagreement and parted ways,^[31] yet the harsh criticism of Paul in Barnabas is quickly treated as evidence of forgery. John Gilchrist, for example, calls it a major tactical blunder.^[32] The same reflex appears elsewhere. If the text differs from the canonical line, it is called late forgery. If it resembles known Gospel material, it becomes plagiarism. If it contains late features, the whole work is treated as late. If it sounds archaic, it is said to be made to look old. Catholic Answers' label, medieval fake, belongs to the same popular rhythm.^[33] None of this means that every objection is empty. It means that, in this pattern, the verdict often arrives before the literary and historical questions have been examined on their own terms.

When a Small Echo Sounds Like Consensus

A similar effect appears when a few Muslim voices are treated as though they spoke for a broad Muslim consensus. Some objections may be adopted in good faith — out of caution, courtesy, or an assumption that the historical matter has already been settled. But a handful of brief or cautious judgments should not be made to carry the weight of a general verdict.

In polemical settings, a narrow point can be lifted from the text, read on the surface, and passed along as established fact. From there, claims such as even Muslim scholars consider it forged spread easily. Yet some of these claims prove much weaker when the text itself is checked. One example is the claim that Barnabas cannot be taken seriously because the Qur'an calls Jesus the Messiah, as if Barnabas rejected the title. The surviving Barnabas text explicitly calls Jesus the Messiah both in the introduction and in chapter 6.^[21] The wider question is treated in the homepage section on The Coming Messiah.

Two Claims in Earlier Christian Context

A Future Figure in the Gospel Field

The line concerning a future guiding figure in John is not a single stray sentence. The Paraclete sayings form a substantial cluster across John 14–16 rather than a single isolated verse.

The canonical text associates the Paraclete closely with the Spirit, while the supporting pages The Paraclete and the Three Barriers and Biblical Passages and the Coming Messenger examine whether the language may also carry a broader expectation of guidance to come.^[23] In Barnabas, a related expectation appears across nine contexts in eleven chapters, pointing towards a coming prophet.^[25] This does not make Barnabas identical with the canonical Gospels. It does make the distance between the two less simple than it is often presented.

The same question can be approached from another direction. Matthew preserves a strong prophetic and monotheistic line: Jesus says he has come not to abolish the Law and the Prophets but to fulfil them; he names love of God with all one's heart as the greatest commandment; and in prayer he submits his own will to God's will.^[22] Barnabas is distinctive less for inventing this line than for making it more open and structural. It is also possible that some passages naming Prophet Muhammad explicitly belong to later redactional layers rather than to the earliest core of the text. That remains a historical hypothesis considered here, not an established result of textual criticism.

The Crucifixion Difference in Early Christian Context

Barnabas parts company with the later orthodox account of the crucifixion, but alternative understandings of the Passion were not unique to it. According to Irenaeus's account, Basilidian teaching in the second century included the claim that Simon of Cyrene was crucified in Jesus' place. Later heresiological sources describe Cerinthus, a Jewish-Christian teacher active around the turn of the second century, as teaching that the heavenly Christ departed from Jesus before the Passion. Docetic circles, already opposed by Ignatius of Antioch in the early second century, treated Christ's sufferings as apparent rather than fully literal.^[26]

These reports come down to us largely through writers who opposed the groups they described and must be handled with that bias in mind.

None of them proves Barnabas's own account. They show only that the crucifixion difference cannot be dismissed as though no comparable question had ever arisen within the diversity of early Christianity.

Toward a Historical Model

The late-fabrication explanation can account for some real features of the surviving text: its late manuscript form, its later language, and some of its visible redactional layers. None of that should be denied. But these points do not, on their own, explain the whole pattern.

The harder question is whether a simple forgery theory can carry the rest at once — the older notices of a Gospel under Barnabas's name, the tomb tradition, the Roman and Vatican trail, the unusual theological profile of the work, its distance from later Nicene development, and its reappearance in a later European manuscript form.

If the dismissal turns out to be weaker than it first looks, the next step is not to declare the text untouched or original. It is to ask what kind of historical path could hold both sides of the evidence together: the late form we actually possess, and the older traces that a simple late-invention theory leaves unresolved.

References