21 When Jesus had said these things, He was troubled in spirit, and testified and said, "Most assuredly, I say to you, one of you will betray Me."
22 Then the disciples looked at one another, perplexed about whom He spoke.
23 Now there was leaning on Jesus' bosom one of His disciples, whom Jesus loved.
24 Simon Peter therefore motioned to him to ask who it was of whom He spoke.
25 Then, leaning back on Jesus' breast, he said to Him, "Lord, who is it?"
26 Jesus answered, "It is he to whom I shall give a piece of bread when I have dipped it." And having dipped the bread, He gave it to Judas Iscariot, the son of Simon.
27 Now after the piece of bread, Satan entered him. Then Jesus said to him, "What you do, do quickly."
28 But no one at the table knew for what reason He said this to him.
29 For some thought, because Judas had the money box, that Jesus had said to him, "Buy those things we need for the feast," or that he should give something to the poor.
30 Having received the piece of bread, he then went out immediately. And it was night.
The Lord's Supper (after verse 30) — only for the saved
troubled (v. 21) — not self-pity or fear but sorrow for Judas
Judas obviously gave nothing away by look or action (Matthew 26:25).
disciple whom Jesus loved — John (also in John 20:2; 21:7, 20)
Peter (v.24) — always outspoken and impetuous
Jesus answered John's question (v.26), perhaps whispered to John alone.
piece of bread — dipped in sauce, usually a mark of honor
Satan entered him (v.27) — Judas had been influenced. He was now possessed (Matthew 26:24). When Judas left, it was on a road that led to hell.