2 Samuel 3:28

24Then Joab came to the king and said, “What have you done? Behold, Abner came to you. Why is it that you have sent him away, and he is already gone?

25You know Abner the son of Ner. He came to deceive you, and to know your going out and your coming in, and to know all that you do.”

26When Joab had come out from David, he sent messengers after Abner, and they brought him back from the well of Sirah; but David didn’t know it.

27When Abner had returned to Hebron, Joab took him aside into the middle of the gate to speak with him quietly, and struck him there in the body, so that he died for the blood of Asahel his brother.

28Afterward, when David heard it, he said, “I and my kingdom are guiltless before the LORD forever of the blood of Abner the son of Ner.

29Let it fall on the head of Joab and on all his father’s house. Let there not fail from the house of Joab one who has a discharge, or who is a leper, or who leans on a staff, or who falls by the sword, or who lacks bread.”

30So Joab and Abishai his brother killed Abner, because he had killed their brother Asahel at Gibeon in the battle.

31David said to Joab and to all the people who were with him, “Tear your clothes, and clothe yourselves with sackcloth, and mourn in front of Abner.” King David followed the bier.

32They buried Abner in Hebron; and the king lifted up his voice and wept at Abner’s grave; and all the people wept.