5 And before hell too, we shall here suffer the utmost ills. “For if you be evil,” it is said, “thou alone shall endure the evil; but if good, it is for yourself and for your neighbor.” Mark, at any rate, how this took place in the former instances also. For neither was anything more wicked than Saul, nor more simple and single-hearted than David. Which therefore was the stronger? Did not David get him twice into his hands, and having the power to slay him, forebore? Had he not him shut up as in a net and prison, and spared him? And this when both others were urging him, and when he himself was able to accuse him of countless charges; but nevertheless he suffered him to go away safe. And yet the other was pursuing him with all his army, but he was, with a few desperate fugitives, wandering and changing from place to place; nevertheless the fugitive had the advantage of the king, forasmuch as the one came to the conflict with simplicity, the other with wickedness.
For what could be more wicked than that man, who when he was leading his armies, and bringing all his wars to a successful issue, and undergoing the labors of the victory and the trophies, but bringing the crowns to him, assayed to slay him?
Source: Homilies on the Gospel of St. Matthew (New Advent)