Development of the New Testament canon a novelty in Irenaeus's time. "Against Heresies" 3.11.7 acknowledges that many heterodox Christians use only one gospel while 3.11.9 acknowledges that some use more than four. The success of Tatian's Diatessaron in about the same time period is "...a powerful indication that the fourfold Gospel contemporaneously sponsored by Irenaeus was not broadly, let alone universally, recognized." Irenaeus apparently quotes from 21 of the New Testament books and names the author he thought wrote the text. He mentions the four gospels, Acts, the Pauline epistles with the exception of Hebrews and Philemon, as well as the first epistle of Peter, and
New Testament as countless allusions, appear throughout the books of the New Testament, from the Gospels and Acts, to the Epistles, to the Apocalypse. The first translations (usually called "versions") of the New Testament were made beginning already at the end of 2nd century. The earliest versions of the New Testament are the translations into the Syriac, Latin, and Coptic languages. These three versions were made directly from the Greek, and are frequently cited in the apparatuses of modern critical editions. Syriac was spoken in Syria, and Mesopotamia, and with dialect in Roman and Byzantine Palestine where it was known as Jewish