The Gospel on Wikipedia III

Canonical accounts of Jesus

Of the many gospels written in antiquity, only four gospels came to be accepted as part of the New Testament, or canonical. An insistence upon there being a canon of canonical four, and no others, was a central theme of Irenaeus of Lyons, c. 185. In his central work, Adversus Haereses Irenaeus denounced various early Christian groups that used only one gospel, such as Marcionism which used only Marcion’s version of Luke, or the Ebionites which seem to have used an Aramaic version of Matthew as well as groups that embraced the texts of newer revelations, such as the Valentinians (A.H. 1.11). Irenaeus declared that the four he espoused were the four Pillars of the Church: “it is not possible that there can be either more or fewer than four” he stated, presenting as logic the analogy of the four corners of the earth and the four winds (3.11.8). His image, taken from Ezekiel 1, of God’s throne borne by four creatures with four faces—”the four had the face of a man, and the face of a lion, on the right side: and the four had the face of an ox on the left side; they four also had the face of an eagle”—equivalent to the “four-formed” gospel, is the origin of the conventional symbols of the Evangelists: lion, bull, eagle, man. Irenaeus was ultimately successful in declaring that the four gospels collectively, and exclusively these four, contained the truth. By reading each gospel in light of the others, Irenaeus made of John a lens through which to read Matthew, Mark and Luke.
By the turn of the 5th century, the Catholic Church in the west, under Pope Innocent I, recognized a biblical canon including the four gospels of Matthew, Mark, Luke, and John, which was previously established at a number of regional Synods, namely the Council of Rome (382), the Synod of Hippo (393), and two Synods of Carthage (397 and 419).[4] This canon, which corresponds to the modern Catholic canon, was used in the Vulgate, an early 5th century translation of the Bible made by Jerome[5] under the commission of Pope Damasus I in 382.