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
Development of the New Testament canon by lacking any passages that connected Jesus with the Old Testament. He believed that the god of Israel, who gave the Torah to the Israelites, was an entirely different god from the Supreme God who sent Jesus and inspired the New Testament. Marcion termed his collection of Pauline epistles the "Apostolikon". These also differed from the versions accepted by later Christian Orthodoxy. Marcion's list and theology were rejected as heretical by the early church; however, he forced other Christians to consider which texts were canonical and why. He spread his beliefs widely; they became known as Marcionism. In the introduction