"The case for early gospels in anything like the form we understand is very fragile.
He wrote: “I challenged my NT colleagues to designate one passage from any one of the four Gospels giving clear evidence of a date later than 50 A. In particular, one would have expected to find a reference to the event in the Epistle to the Hebrews, for it would have greatly strengthened the author’s argument that the Temple worship was now obsolete. Hill goes on to propose that Ignatius, Polycarp, Papias’ elders, and Hierapolis' Exegesis of the Lord’s Oracles possibly all quote from the Gospel of John.Epiphanius, however, takes note of an Early Christian sect, the Alogi, who believed the Gospel was actually written by one Cerinthus, a second-century Gnostic..24-25 indicates that the author of the epilogue, who is supposed a third-party editor, claims the preceding narrative is based on the Beloved Disciple's testimony, while he himself is not the Beloved Disciple. Hill argues that there is a solid early orthodox tradition of authorship: the tradition that an apostle of Jesus wrote the Gospel and can be attested to as early as the first two decades of the second century, and there are many Church Fathers in the remainder of the second century that ascribe the text to John the Evangelist.Martin Hengel and Jorge Frey similarly argue for John the Presbyter as the author of the text.