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 Prayer (in the form found in the Gospel of Matthew 6:9–13) is also a standard feature of Christian worship. Most of the influence of the New Testament upon the arts has come from the Gospels and the Book of Revelation. Literary expansion of the Nativity of Jesus found in the Gospels of Matthew and Luke began already in the 2nd century, and the portrayal of the Nativity has continued in various art forms to this day. The earliest Christian art would often depict scenes from the New Testament such as the raising of Lazarus, the baptism of Jesus or the