Isaac of Nineveh

And David, who was a man after God’s own heart, who because of his virtues was found worthy to generate from his seed the promise of the Fathers, and to have Christ shine forth from himself for the salvation of all the world, was he not punished because of adultery with a woman, when he held her beauty with his eyes and was pierced in his soul by that arrow? For it was because of this that God raised up a war against him from within his own household, and he who came forth from his loins pursued him. These things befell him even after he had repented with many tears, such that he moistened his couch with his weeping, and after God had said to him through the prophet, “The Lord hath forgiven thy sin.”