John 6
66 Ref Because of what he said, a number of the disciples went back and would no longer go with him.
67 Ref So Jesus said to the twelve, Have you a desire to go away?
68 Ref Then Simon Peter gave this answer: Lord, to whom are we to go? you have the words of eternal life;
69 Ref And we have faith and are certain that you are the Holy One of God.
70 Ref Then Jesus said, Did I not make a selection of you, the twelve, and one of you is a son of the Evil One?
71 Ref He was talking of Judas, the son of Simon Iscariot. It was he who was to be false to Jesus--one of the twelve.