Disturbing for Christians? Dr. Rainy

Should the discovery of the Gnostic 'Gospel of Judas' disturb us as we move forwards towards Easter? Ought I to use the pulpit at Glenshilloch to tell my congregation that we cannot be sure? Of course not! We have known about this text for centuries from the works of Irenaeus, who called it a 'fiction', to have the text Irenaeus read and opposed is of interest for people like Dr. Trevelyan, who study Church History in depth. We have previously only known this work from quotations in Irenaeus only, now we can compare Irenaeus' version of the book with the actual text. But there is really nothing here that is any more shocking or disturbing than the contents of the Nag Hammadi manuscripts found some fifty or so years ago.

More importantly, this text was actually found Thirty years ago! It's not a new discovery. So let us all calm down, smile, and say 'well, of course it's interesting.'
The Telegraph article from Friday April 7th (Page 33) claims that "if the Gospel [of Judas] was written in the middle of the second century, then it is almost contemporaneous with the Gospel of John." The trouble is that this is taking the very latest date for John, and the earliest for this 'Gospel of Judas'. But the earliest date for John is about AD 68-85. The Liberal John A.T. Robinson actually thought that the whole N.T. was complete by AD 70, since there is no mention of the destruction of Jerusalem in any New Testament book.
Disturbing? No, just interesting.