6:16

who turned traitor: Or “who became a traitor.” The phrase is of interest because it suggests that Judas underwent a change. He was not a traitor when he became a disciple; nor was he a traitor when Jesus appointed him to be an apostle. He was not predestined to be a traitor. Rather, by the misuse of his own free will, he “turned traitor” sometime after his appointment. From the moment the change began to take place, Jesus was aware of it, as suggested at Joh 6:64.