When the devil leaves any one he watches his time for return, and having taken it, he leads him into a second sin . . . 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 . . . 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. 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.
Origen, quoted by St. Thomas Aquinas: Catena Aurea.