John

The apostle John — traditionally identified as the author of the Fourth Gospel, three epistles, and Revelation — whose Gospel differs fundamentally from the Synoptic Gospels (Matthew, Mark, Luke) by presenting Jesus as the eternal Logos (Word) who became flesh.

The Gospel of John's prologue ('In the beginning was the Word') identifies Jesus with the Logos of Greek philosophy — making the Fourth Gospel the most philosophically ambitious of the Gospels and the one that most directly connects Christianity with Greek metaphysics.