Matthew 27:5

But when the Devil leaves any one, he watches his time for return, and having taken it, he leads him into a second sin, and then watches for opportunity for a third deceit. (1 Cor. 5:1.) So the man who had married his father's wife afterwards repented him of this sin, but again the Devil resolved so to augment this very sorrow of repentance, that his sorrow being made too abundant might swallow up the sorrower. Something like this took place in Judas, who after his repentance did not preserve his own heart, but received that more abundant sorrow supplied to him by the Devil, who sought to swallow him up, as it follows, And he went out, and hanged himself. But had he desired and looked for place and time for repentance, he would perhaps have found Him who has said, I have no pleasure in the death of the wicked. (Ezek. 33:11.) Or, perhaps, he desired to die before his Master on His way to death, and to meet Him with a disembodied spirit, that by confession and deprecation he might obtain mercy; and did not see that it is not fitting that a servant of God should dismiss himself from life, but should wait God's sentence.

He hung himself, to show that he was hateful to both heaven and earth.

This was a charge both against him, and against these men; against him, not because he repented, but because he did so, late, and slowly, and became self-condemned (for that he delivered Him up, he himself confessed); and against them, for that having the power to reverse it, they repented not. But mark, when it is that he feels remorse. When his sin was completed, and had received an accomplishment. For the devil is like this; he suffers not those that are not watchful to see the evil before this, lest he whom he has taken, should repent. At least, when Jesus was saying so many things, he was not influenced, but when his offense was completed, then repentance came upon him; and not then profitably. For to condemn it, and to throw down the pieces of silver, and not to regard the Jewish people, were all acceptable things; but to hang himself, this again was unpardonable, and a work of an evil spirit. For the devil led him out of his repentance too soon, so that he should reap no fruit from thence; and carries him off, by a most disgraceful death, and one manifest to all, having persuaded him to destroy himself. But mark, I pray thee, the truth shining forth on every side, even by what the adversaries both do and suffer. For indeed even the very end of the traitor stops the mouths of them that had condemned Him, and suffers them not to have so much as any shadow of an excuse that is surely shameless. For what could they have to say, when the traitor is shown to pass such a sentence on himself. He brought again the thirty pieces of silver to the chief priests, and saith, I have sinned in that I have betrayed innocent blood. And they said, what is that to us? see thou to that. And he cast down the pieces of silver in the temple, and departed, and went and hanged himself. For neither could he bear his conscience scourging him. But mark, I pray thee, the Jews too suffering the same things. For these men also, when they ought to have been amended by what they suffered, do not stop, until they have completed their sin. For his sin had been completed, for it was a betrayal; but theirs not yet. But when they too had accomplished theirs, and had nailed Him to the cross then they also are troubled. Hear, ye covetous, consider what befell him; how he at the same time lost the money, and committed the sin, and destroyed his own soul. Such is the tyranny of covetousness. He enjoyed not the money, neither the present life, nor that to come, but lost all at once, and having got a bad character even with those very men, so hanged himself.

(Hil. Quæst. V. et N. Test. q. 94.) Since the Chief Priests were employed about the murder of the Lord from the morning to the ninth hour, how is this proved that before the crucifixion Judas returned them the money he had received, and said to them in the temple, I have sinned, in that I have betrayed innocent blood? Whereas it is manifest that the Chief Priests and Elders were never in the temple before the Lord's crucifixion, seeing that when He was hanging on the Cross they were there to insult Him. Nor indeed can this be proved hence, because it is related before the Lord's Passion, for many things which were manifestly done before, are related after, that, and the reverse. It might have been done after the ninth hour, when Judas, seeing the Saviour dead and the veil of the temple rent, the earthquake, the bursting of the rocks, and the elements terrified, was seized with fear and sorrow thereupon. But after the ninth hour the Chief Priests and Elders were occupied, as I suppose, in the celebration of the Passover; and on the Sabbath, the Law would not have allowed him to bring money. Therefore it is to me as yet unproved on what day or at what time Judas ended his life by hanging.