John Gill's Bible Commentary Ver. 3. Then entered Satan into Judas , etc.] At the same time that the sanhedrim were sitting, and consulting about the death of Christ, Satan, or the adversary, as the word signifies, the devil, who is the enemy of the Messiah, the woman's seed, entered into Judas; not corporeally, as he did into those that were possessed by him; but he entered into his heart, as the Ethiopic version renders it; he put it into his heart to betray him, as it is said in ( John 13:2) he stirred up, and worked upon the corruptions of his heart; suggested evil things to his mind, and baited his temptations agreeable to his malice and covetousness: and this man was surnamed Iscariot ; to distinguish him from another apostle of the same name; concerning this his surname, (see Gill on Matthew 10:4), (see Gill on John 13:2). Being of the number of the twelve ; apostles, or disciples of Jesus, as the Persic version reads, and which is an aggravation of his sin: now this being two days before the passover, shows, that the sop which Judas took, after which the devil entered into him, ( John 13:27) could not be the passover sop, but was the sop he ate at the supper in Bethany, in the house of Simon the leper, so long before it.
Matthew Henry Commentary
Verses 1-6 - Christ knew all men, and had wise and holy ends in taking Judas to be disciple. How he who knew Christ so well, came to betray him, we ar here told; Satan entered into Judas. It is hard to say whether mor mischief is done to Christ's kingdom, by the power of its open enemies or by the treachery of its pretended friends; but without the latter its enemies could not do so much evil as they do.
Greek Textus Receptus
εισηλθεν 1525 5627 V-2AAI-3S δε 1161 CONJ ο 3588 T-NSM σατανας 4567 N-NSM εις 1519 PREP ιουδαν 2455 N-ASM τον 3588 T-ASM επικαλουμενον 1941 5746 V-PPP-ASM ισκαριωτην 2469 N-ASM οντα 5607 5752 V-PXP-ASM εκ 1537 PREP του 3588 T-GSM αριθμου 706 N-GSM των 3588 T-GPM δωδεκα 1427 A-NUI
Vincent's NT Word Studies
3. Satan. See on ch. xiii. 16.Iscariot. See on Matt. x. 5.
Robertson's NT Word Studies
22:3 {Satan entered into Judas} (eiselqen eis ioudan). Ingressive aorist active indicative. Satan was now renewing his attack on Jesus suspended temporarily (#Lu 4:13) "until a good chance." He had come back by the use of Simon Peter (#Mr 8:33; Mt 16:23). The conflict went on and Jesus won ultimate victory (#Lu 10:18). Now Satan uses Judas and has success with him for Judas allowed him to come again and again (#Joh 13:27). Judas evidently opened the door to his heart and let Satan in. qen Satan took charge and he became a devil as Jesus said (#Joh 6:70). this surrender to Satan in no way relieves Judas of his moral responsibility.