2 Samuel 11:25-27

25Then David told the messenger, “Say this to Joab: ‘Do not let this matter upset you, for the sword devours one as well as another. Strengthen your attack against the city and demolish it.’ Encourage him with these words.”

26When Uriah’s wife heard that her husband was dead, she mourned for him. 27And when the time of mourning was over, David had her brought to his house, and she became his wife and bore him a son.

But the thing that David had done was evil in the sight of the LORD.