There's several accounts of Jesus taking note of Judas being a traitor, it was evident that He knew the heart of Judas, from the beginning.
Joh 6:70 Jesus answered them, Have not I chosen you twelve, and one of you is a devil?
Joh 6:71 He spake of Judas Iscariot the son of Simon: for he it was that should betray him, being one of the twelve.
Joh 12:4 Then saith one of his disciples, Judas Iscariot, Simon's son, which should betray him,
Joh 12:5 Why was not this ointment sold for three hundred pence, and given to the poor?
Joh 12:6 This he said, not that he cared for the poor; but because he was a thief, and had the bag, and bare what was put therein.
Joh 12:7 Then said Jesus, Let her alone: against the day of my burying hath she kept this.
Joh 12:8 For the poor always ye have with you; but me ye have not always.
Joh 13:21 When Jesus had thus said, he was troubled in spirit, and testified, and said, Verily, verily, I say unto you, that one of you shall betray me.
Joh 13:22 Then the disciples looked one on another, doubting of whom he spake.
Joh 13:23 Now there was leaning on Jesus' bosom one of his disciples, whom Jesus loved.
Joh 13:24 Simon Peter therefore beckoned to him, that he should ask who it should be of whom he spake.
Joh 13:25 He then lying on Jesus' breast saith unto him, Lord, who is it?
Joh 13:26 Jesus answered, He it is, to whom I shall give a sop, when I have dipped it. And when he had dipped the sop, he gave it to Judas Iscariot, the son of Simon.
Joh 13:27 And after the sop Satan entered into him. Then said Jesus unto him, That thou doest, do quickly.
Satan entered into him - He had entered into him before, and now he enters again, to strengthen him in his purpose of delivering up his Master. But the morsel was not the cause of this entering in; the giving of it only marks the time in which the devil confirmed Judas in his traitorous purpose. Some have thought that this morsel was the sacrament of the Lord’s Supper: but this is an utter mistake.
That thou doest, do quickly - As if he had said: “Thou art past all counsel; thou hast filled up the measure of thy iniquity, and hast wholly abandoned thyself to Satan; I will not force thee to turn from thy purpose, and without this thou wilt not. Thy designs are all known to me; what thou art determined to do, and I to permit, do directly; delay not, I am ready.”
In the meanwhile the Lord girded Himself for the conflict by gathering to His heart the remainder of the apostolic band, though none of them really understood. The arrangement of the man with the waterpot was evidently to elude arrest during the supper, as Judas could not inform his accomplices beforehand of the selected supper room. Remember that Jesus asks each of us for the guest chamber of our heart! Ask Him, not to be as a wayfaring man who tarries for the night, but to abide always. F.B. Meyer
Son of man with a kiss? Luke 22:47-48
I. A TRAITOR AMONG THE DISCIPLES. Many of them were weak in faith and carnal in apprehension, but only one a traitor.
II. THE CHARACTERISTIC OF HIS TREASON. Betrayed Lord into cruel hands of foes. Professed followers of Christ may betray Him to the scorn of the world, giving the sceptic arguments for his infidelity, and the worldly excuses for rejection of Christ.
III. THE MANNER OF THE BETRAYAL. A kiss.
1. It was the accepted token of affection.
2. It was here prostituted to the basest of uses.
3. It was received with lamblike meekness by Him who knew it meant treachery.
IV. THEY BETRAY THE SON OF MAN WITH A KISS WHO--
1. Compliment and deny Him with the same lips,
2. Profess to be united with Him at His table, and then act as lovers and servants of the world.
3. Exalt His humanity to the skies, and deny His rightful divinity and the efficacy of the atonement. (Homiletic Review.)
1. We see how needful it is that we, each one of us, look well to the state of our own hearts. Here is a man who knew the truth, who had preached the truth, who had wrought miracles for the sake of the truth; and yet became a castaway. Now, why was this? He “held the truth in unrighteousness.” The man who has been a hypocrite in religion is very rarely recovered; he deceives others, but yet more fatally does he deceive himself.
2. Again: the history teaches us how little security against our falling away, there is in the possession of eminent spiritual advantages. “Judas Iscariot, one of the twelve.”
3. Again: we learn from this history how insensible and unperceived is the progress of the downward course in sin. When a man once enters on the way of transgression, he can never tell where he shall stop. Neither wickedness nor holiness attain to their full stature all at once. We cannot suppose that Judas had the remotest thought of his treachery when he first accepted the invitation to become one of the apostles.
4. The enslaving power of the love of this present world. (D. Moore, M. A.)