Development of the New Testament canon day called that of the sun" (Sunday) alongside the "writings of the prophets." A defined set of four gospels (the "Tetramorph") was asserted by Irenaeus, "c". 180, who refers to it directly. By the early 3rd century, Origen may have been using the same twenty-seven books as in the present New Testament canon, though there were still disputes over the acceptance of the Letter to the Hebrews, James, II Peter, II John, III John, Jude and Revelation, known as the Antilegomena. Likewise, the Muratorian fragment is evidence that, perhaps as early as 200, there existed a set of Christian writings
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