Pardon me if I don't rush out and buy the newly revealed "Gospel of Judas" being hailed by the National Geographic Society.
According to this so-called "gospel," Judas only did what Jesus told him to do by betraying Christ.
But, as Tim Graham's "Newsbusters" blog shows, the idea that this somehow disproves the New Testament gospels, is as preposterous as thinking that a document written in 1926 denying Benedict Arnold was a traitor would cause historians to doubt that Benedict Arnold was a "Judas," if you will.
This 3rd or 4th century document is interesting only in that it gives an example of the common heretical and anti-Christian groups that existed at the time. In no way does it have any believability that would challenge the accounts of Matthew, Mark, Luke and John, all dated to the first century with plenty of manuscript and archaeological evidence to show their authenticity.
As a professor Andrey Kurayev, professor at Moscow Theological Academy put it, "This document cannot be traced back to Judas Iscariot for the simple reason that Judas hung himself on the day Christ was crucified and no Gospel of Judas can exist."
So who wrote it? It supports the theology of Gnosticism, perhaps the most common heresy confronting the early church. Gnosticism believed that spirit was good but matter was evil, and thus it denied that Jesus really came in the flesh. More than likely, a Gnostic wrote the so-called "Gospel of Judas" and attached Judas's name to it to bolster support for his ideas, in much the same way that Dan Brown's novel, The Da Vinci Code, uses Leonardo Da Vinci to claim things that Da Vinci never said or did.