John 13:21-25

After he had said this, Jesus was troubled in spirit and testified, “Very truly I tell you, one of you is going to betray me.” His disciples stared at one another, at a loss to know which of them he meant. One of them, the disciple whom Jesus loved, was reclining next to him. Simon Peter motioned to this disciple and said, “Ask him which one he means.” Leaning back against Jesus, he asked him, “Lord, who is it?”