And one of you is a devil (kai ex humò„n heis diabolos estin). Jesus does not say that Judas was a devil when he chose him, but that he is one now. In Joh 13:2, Joh 13:27 John speaks of the devil entering Judas. How soon the plan to betray Jesus first entered the heart of Judas we do not know (Joh 12:4). One wonders if the words of Jesus here did not cut Judas to the quick.