This volume contains two short studies, originally printed in the Journal of Theological Studies, on the Diatessaron and Syriac literature. In the first, Connolly examines the evidence on the data and order of two biblical passages in the Syriac Acts of John in comparison with some other places in Syriac literature, such as Ephrem’s commentary on the Diatessaron, the Old Syriac Gospels, and Solomon of Basra’s Book of the Bee. In the second investigation, he looks at some material from Jacob of Serug showing his use of the Diatessaron or Old Syriac Gospels over against the Peshitta. Both studies suggest some lines of alteration that had taken place in the Arabic Diatessaron. Readers who study the history of the Gospels in Syriac and their reception and use in Syriac literature will find these two studies of interest.