New Testament ..." or "The Gospel according to ..." followed by the name of the supposed author. Whatever these admittedly early ascriptions may imply about the sources behind or the perception of these gospels, they are anonymous compositions. The first three gospels listed above are classified as the Synoptic Gospels. They contain similar accounts of the events in Jesus' life and his teaching, due to their literary interdependence. The Gospel of John is structured differently and includes stories of several miracles of Jesus and sayings not found in the other three. These four gospels that were eventually included in the New Testament
New Testament Writings attributed to the apostles circulated among the earliest Christian communities and the Pauline epistles were circulating, perhaps in collected forms, by the end of the 1st century AD. One of the earliest attempts at solidifying a canon was made by Marcion, "circa" 140 AD, who accepted only a modified version of Luke (the Gospel of Marcion) and ten of Paul's letters, while rejecting the Old Testament entirely. His canon was increasingly rejected by other groups of Christians, notably the proto-orthodox Christians, as was his theology, Marcionism. Adolf Harnack in "Origin of the New Testament" (1914) observed that the church