A historical and editorial introduction to SAB — The One Gospel
Four Witnesses, One Life
Christianity has received not one account of Yeshua of Nazareth, but four. Matthew, Mark, Luke, and John proclaim the same central figure while approaching his life and teaching through different literary and theological perspectives. Matthew situates him deeply within Israel's Scriptures, covenant, and messianic hopes. Mark gives the ministry a striking urgency and concentrates attention upon the coming Kingdom, the identity of Yeshua, and the road toward suffering. Luke emphasizes the breadth of the good news, its historical setting, the work of the Spirit, and the place of the overlooked and excluded. John opens with the eternal Word and unfolds Yeshua's identity through signs, encounters, and extended discourses.
These are not four chapters of a single biography. Each Gospel is a work with an arrangement, emphasis, and voice of its own. Their testimonies frequently converge, yet they do not always relate an event in the same order, reproduce a saying in the same words, or select the same details. This plurality has been preserved within the Christian canon. It is a source of richness, though it can also make the life of Yeshua difficult to follow as one sustained narrative.
The desire to read the four accounts together is almost as old as the fourfold Gospel tradition itself. One of its earliest and most influential expressions was the Diatessaron, commonly attributed to Tatian the Assyrian.
Tatian and the Diatessaron
Tatian was a second-century Christian writer associated with Justin Martyr in Rome. Around the latter part of the second century, commonly dated near AD 170, he composed a Gospel harmony now known by the Greek title Diatessaron, conventionally understood as a work made through four. Its bold literary premise was to gather the materials of Matthew, Mark, Luke, and John into one continuous account.
The work proved especially influential in Syriac-speaking Christianity. It was read, copied, and commented upon, and in some communities it served in place of the four separate Gospel books. Ephrem the Syrian wrote a commentary upon it in the fourth century. Later ecclesiastical authorities, concerned in part to secure the distinct canonical Gospels, encouraged the use of the four separate accounts; Theodoret of Cyrrhus reported removing numerous copies of the harmony from churches in his jurisdiction.
The history of the Diatessaron's text is less straightforward than its cultural importance. No universally accepted complete manuscript of Tatian's original second-century composition survives. What is available comes through later and sometimes differently transmitted witnesses, including medieval Arabic manuscripts, testimony preserved through Ephrem's commentary and its Armenian transmission, and the Latin Codex Fuldensis, which reflects a harmonized arrangement while substantially using Vulgate wording.
The two English presentations often consulted today—J. Hamlyn Hill's The Earliest Life of Christ and Hope W. Hogg's The Diatessaron of Tatian the Assyrian—do not represent two independently preserved second-century originals. Both relate to the Arabic Diatessaron tradition published by Agostino Ciasca in 1888: Hill translated Ciasca's Latin version, while Hogg produced an English rendering from the Arabic. Their introductions and notes remain useful, but a particular reading in either should not automatically be attributed with certainty to Tatian himself.
The Art—and Difficulty—of Making One Gospel
The Diatessaron demonstrates that a harmony is not merely four texts placed end to end. It is an act of literary composition requiring decisions about order, repetition, setting, and wording. When several Evangelists describe what appears to be the same event, the compiler must decide how to combine the overlapping testimony. When similar sayings appear in different settings, the compiler must decide whether they record the same occasion, repeated teaching, or distinct events. Where chronological indications differ, any single narrative sequence involves interpretation.
Consider the cleansing of the Temple. John places the episode near the beginning of Yeshua's public ministry, whereas Matthew, Mark, and Luke place their accounts in the final Jerusalem period. The transmitted Diatessaron joins details from John's account to the later Synoptic scene, presenting one cleansing. That is also the decision adopted in the present One Gospel. It is a deliberate harmonization, not a claim that the chronological problem has been conclusively settled.
The Diatessaron tradition likewise combines the Bethany anointing accounts of Matthew, Mark, and John, bringing together their distinctive details within a single scene. But it also illustrates the hazards of harmonization. In the received arrangement, the conversation with Nicodemus is moved far later than its setting in John's Gospel, and material concerning the greatest commandment is brought together with Luke's question about the neighbor and the parable of the Good Samaritan. Such arrangements may produce elegant narrative or thematic continuity without establishing that all the words were spoken on the same occasion.
These examples disclose the governing editorial problem: the smoother a unified narrative becomes, the easier it is to conceal the separate decisions through which that unity was achieved. A good harmony must therefore serve the reader without pretending that its reconstructed sequence is the only possible one.
The Purpose of the Present Work
SAB — The One Gospel stands within this ancient literary tradition but does not attempt to recover Tatian's lost original, reproduce his arrangement, or replace the canonical Gospels. Its purpose is to offer a continuous, carefully constructed account of the life, words, works, Passion, and Resurrection of Yeshua, drawing upon all four canonical witnesses.
The working method is to identify parallel episodes, preserve distinctive testimony, avoid unnecessary duplication, and weave the materials into readable English. Where the sources clearly describe the same encounter, their complementary details may be integrated. Where episodes resemble one another but differ significantly in situation or meaning, they may remain separate. Thus the earlier anointing recorded in Luke is distinguished from the Bethany anointing near the Passion; likewise, the parable of the minas in Luke is not simply reduced to Matthew's parable of the talents.
The present harmony also retains both genealogies, unlike the original Diatessaron as described by some ancient witnesses. They carry distinctive theological meanings: Matthew locates Yeshua within Israel's covenantal and Davidic history, while Luke reaches through the generations toward Adam. Their preservation is part of a broader commitment to comprehensive source representation.
The working manuscript includes an introduction, twenty-two chapters, and a concluding movement extending through the Resurrection appearances, Ascension, and Pentecost. Its source references incorporate testimony from Acts and 1 Corinthians where relevant to the continuation of the Resurrection narrative. It also contains a separately tracked selection of sayings from the noncanonical Gospel of Thomas. These additions are identified rather than presented as if they belonged to the four canonical narratives, and their use does not imply that the sayings have securely recoverable dates or narrative settings.
This work seeks to be both faithful and readable. Yet faithfulness cannot be determined from a completed narrative alone. It requires returning repeatedly to the individual Evangelists, comparing the Greek, considering significant textual variants, and acknowledging places where chronology or identification remains uncertain.
Transparency, Text, and the Final Revision
To make the method inspectable, the project maintains source citations, an editorial commentary and endnote register, a separate Thomas integration ledger, and a Master Gospel Coverage Index. The latter maps all 3,779 conventionally numbered verses of Matthew, Mark, Luke, and John to at least one cited scene in the present draft. This is reference coverage, not proof that every distinctive Greek clause has survived in the English narrative. The final source-by-source collation and literary revision remain essential.
The English text is being reviewed against the Greek and several English translations, including more literal renderings and traditional biblical diction. The aim is not to manufacture an average of existing translations, but to establish an independent, coherent English expression governed by the original sources. Substantial borrowing from copyrighted modern translations would require appropriate permission; an original rendering must be more than superficial changes to another translator's phrasing.
Some harmonization decisions will remain open to reasonable disagreement. The one late Temple cleansing, the relationship between the Synoptic Passover accounts and John's chronology, the hour of the Crucifixion, and the sequence of the Resurrection appearances are important examples. Rather than conceal them beneath a deceptively seamless narrative, the edition will document significant choices in endnotes while allowing the main text to be read continuously.
Four Voices Within One Story
The value of Tatian's undertaking was not that the four Gospels suddenly became unnecessary. Its value was the experience of encountering the ministry of Yeshua as an unfolding whole. The same aspiration animates the present work.
But the unity sought here must not be purchased at the cost of forgetting the witnesses from which it was made. Matthew remains Matthew, Mark remains Mark, Luke remains Luke, and John remains John. Their differences are not merely obstacles to overcome; they are part of the literary and theological inheritance entrusted to readers.
The One Gospel is therefore best understood as a companion to the four Gospels: a unified reading made possible by their testimony, accompanied by the means to return to them. It invites the reader to follow the life and teaching of Yeshua without repeatedly leaving the narrative to consult parallel accounts, while preserving a clear path back to the original texts.
Nearly nineteen centuries after Tatian, the task remains both simple and demanding: to let the four voices speak together without silencing what is distinctive in each. The hope of this work is that their combined testimony may allow the life, words, and revelation of Yeshua to be encountered anew—as one continuous Gospel, rooted in four indispensable witnesses.
Historical and editorial references
- Hope W. Hogg, trans., The Diatessaron of Tatian the Assyrian, “Translator's Introduction,” especially discussions of the Arabic manuscripts, Ephrem, Codex Fuldensis, opening material, genealogy traditions, and method of harmonization.
- J. Hamlyn Hill, trans., The Earliest Life of Christ Ever Compiled from the Four Gospels: The Diatessaron of Tatian, introduction and editorial notes, especially sections concerning the Temple cleansing (XXXII), Bethany anointing (XXXIX), and greatest commandment (XXXIV). The supplied Gorgias edition is a reprint of a historical English edition.
- SAB — The One Gospel; The One Gospel — Editorial Commentary & Endnotes; The One Gospel — Master Gospel Coverage Index. The statements about the present project describe its working manuscript and editorial records, not a completed independent Greek-text collation.