21 When Jesus had said this he was troubled in spirit, and gave witness, saying, Truly I say to you, that one of you will be false to me. 22 Then the eyes of the disciples were turned on one another, in doubt as to whom he had in mind. 23 There was at table one of his disciples, the one dear to Jesus, resting his head on Jesus' breast. 24 Making a sign to him, Simon Peter said, Who is it he is talking about? 25 He, then, resting his head on Jesus' breast, said to him, Lord, who is it? 26 This was the answer Jesus gave: It is the one to whom I will give this bit of bread after I have put it in the vessel. Then he took the bit of bread, put it into the vessel, and gave it to Judas, the son of Simon Iscariot. 27 And when Judas took the bread Satan went into him. Then Jesus said to him, Do quickly what you have to do. 28 Now it was not clear to anyone at table why he said this to him. 29 Some were of the opinion that because Judas kept the money-bag Jesus said to him, Get the things we have need of for the feast; or, that he was to give something to the poor. 30 So Judas, having taken the bit of bread, straight away went out: and it was night.
Matthew Henry's Commentary on John 13:21-30
Commentary on John 13:18-30
(Read John 13:18-30)
Our Lord had often spoken of his own sufferings and death, without such trouble of spirit as he now discovered when he spake of Judas. The sins of Christians are the grief of Christ. We are not to confine our attention to Judas. The prophecy of his treachery may apply to all who partake of God's mercies, and meet them with ingratitude. See the infidel, who only looks at the Scriptures with a desire to do away their authority and destroy their influence; the hypocrite, who professes to believe the Scriptures, but will not govern himself by them; and the apostate, who turns aside from Christ for a thing of naught. Thus mankind, supported by God's providence, after eating bread with Him, lift up the heel against Him! Judas went out as one weary of Jesus and his apostles. Those whose deeds are evil, love darkness rather than light.