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
Old Testament messianic prophecies quoted in the New Testament not let thy Holy One see corruption.’ For David, after he had served the counsel of God in his own generation, fell asleep, and saw corruption; but he whom God raised up saw no corruption" (Acts 13: 34-37). Two of the Gospels ( and ) quote Jesus as speaking these words from the cross; The other two canonical Gospels give different accounts of the words of Jesus. Luke 23:46 quotes Psalm 31:5 ("Into your hands I commit my spirit") while John has Jesus say "It is finished" (John 19:30). Some scholars see this as evidence that the words of Jesus