John 13:21, 26, 30

When Jesus had thus said, he was troubled in the spirit, and testified, and said, Verily, verily, I say unto you, that one of you shall betray me.

Jesus therefore answereth, He it is, for whom I shall dip the sop, and give it him. So when he had dipped the sop, he taketh and giveth it to Judas, the son of Simon Iscariot.

He then having received the sop went out straightway: and it was night.