Includes bibliographical references (p. 491-521) and indexes.

Preliminary material -- INTRODUCTION -- THE SECOND-CENTURY BACKGROUND -- TATIAN -- A HISTORY OF DIATESSARONIC STUDIES AND A DESCRIPTION OF DIATESSARONIC WITNESSES: FROM 546 TO 1900 -- A HISTORY OF DIATESSARONIC STUDIES AND A DESCRIPTION OF DIATESSARONIC WITNESSES: FROM 1900 TO THE 1930s -- A HISTORY OF DIATESSARONIC STUDIES AND A DESCRIPTION OF DIATESSARONIC WITNESSES: FROM THE 1930s TO 1951 -- A HISTORY OF DIATESSARONIC STUDIES AND A DESCRIPTION OF DIATESSARONIC WITNESSES: FROM 1951 TO THE PRESENT -- USING THE DIATESSARON -- THE PRESENT AND THE FUTURE -- A CATALOGUE OF MANUSCRIPTS OF DIATESSARONIC WITNESSES AND RELATED WORKS -- A STEMMA OF THE DIATESSARONIC TRADITION -- BIBLIOGRAPHY -- INDEX LOCORUM -- INDEX CODICUM -- INDEX AUCTORUM -- INDEX RERUM -- SUPPLEMENTS TO VIGILIAE CHRISTIANAE.

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A gospel harmony composed c. 172 C.E., the Diatessaron is one of the earliest witnesses to the gospels. Regarded as the first version of the gospels in Latin, Syriac, and Armenian, the Diatessaron was used by Encratites, Judaic-Christians, and “Great Church” Christians alike. This study is the first comprehensive treatment of the Diatessaron in more than a century. After sketching the second-century setting and Tatian's biography, it describes virtually every Diatessaronic witness and provides a scholar-by-scholar summary of research from 546 to the present. Criteria for reconstructing Diatessaronic readings are developed, and numerous examples offer the reader first-hand experience with the witnesses. It contains the first Bibliography of research on the Diatessaron (600+ titles) and the first “Catalogue of Manuscripts of Diatessaronic Witnesses and Related Works” ever published.