After he had said this, Jesus was troubled in spirit1 and testified, "I tell you the truth, one of you is going to betray me."2
References for John 13:21
His disciples stared at one another, at a loss to know which of them he meant.
One of them, the disciple whom Jesus loved,3 was reclining next to him.
References for John 13:23
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?"4
References for John 13:25
Jesus answered, "It is the one to whom I will give this piece of bread when I have dipped it in the dish." Then, dipping the piece of bread, he gave it to Judas Iscariot,5 son of Simon.
References for John 13:26
As soon as Judas took the bread, Satan entered into him.6 "What you are about to do, do quickly," Jesus told him,
References for John 13:27
but no one at the meal understood why Jesus said this to him.
Since Judas had charge of the money,7 some thought Jesus was telling him to buy what was needed for the Feast,8 or to give something to the poor.9
References for John 13:29
As soon as Judas had taken the bread, he went out. And it was night.10
References for John 13:30