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 apocrypha the "Lee Peshitta" of 1823). Today, the official lectionaries followed by the Malankara Syrian Orthodox Church and the East Syriac Chaldean Catholic Church, which is in communion with the Holy See, still only present lessons from the 22 books of the original Peshitta. The Armenian Apostolic church at times has included the Third Epistle to the Corinthians, but does not always list it with the other 27 canonical New Testament books. This Church did not accept Revelation into its Bible until 1200 CE. The New Testament of the Coptic Bible, adopted by the Egyptian Church, includes the two Epistles of