Because David did that which was right in the eyes of the LORD, and turned not aside from any thing that he commanded him all the days of his life, save only in the matter of Uriah the Hittite. Save only in the matter of Uriah - Properly speaking, this is the only flagrant fault or crime in the life of David. It was a horrible offense, or rather a whole system of offenses. See the notes on 2 Samuel 11 (note), and 2 Samuel 12 (note).
Related Commentaries of 1 Kings 15:5
1 Kings 15:5
5 Because David did that which was right in the eyes of the LORD, and turned not aside from any thing that he commanded him all the days of his life, save only in the matter of Uriah the Hittite.