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 who had not yet given birth and who might or might not be a virgin, and the Greek translation rendered almah as "parthenos", the Greek word for "virgin". Scholars agree that "almah" has nothing to do with virginity, but many conservative American Christians still judge the acceptability of new bible translations by the way they deal with Isaiah 7:14. The virgin birth is found only in the gospels of Matthew and Luke; there is no reference to the birth of Jesus in Mark's gospel or the Gospel of John, nor in the epistles of Paul, who says that Jesus was