New Testament the Anchor Bible Dictionary), may be the earliest known New Testament canon attributed to mainstream Christianity. It is similar, but not identical, to the modern New Testament canon. The oldest clear endorsement of Matthew, Mark, Luke, and John being the only legitimate gospels was written "circa" 180 AD. A four gospel canon (the "Tetramorph") was asserted by Irenaeus, who refers to it directly in his polemic "Against the Heresies", "It is not possible that the gospels can be either more or fewer in number than they are. For, since there are four zones of the world in which we live,
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