2 Samuel 11:13-15

13Now when David called him, he ate and drank before him; and he made him drunk. And at evening he went out to lie on his bed with the servants of his lord, but he did not go down to his house.

14In the morning it happened that David wrote a letter to Joab and sent it by the hand of Uriah.

15And he wrote in the letter, saying, “Set Uriah in the forefront of the hottest battle, and retreat from him, that he may be struck down and die.”