2 Samuel 3:26-30 - Joab Murders Abner
26 Then Joab went out from David, and he sent messengers after Abner, and they brought him back from Bor Hasirah, but David did not know [it]. 27 When Abner returned to Hebron, Joab took him aside to the middle of the gate to speak with him in private. Then he struck him in the stomach there and he died, {for he had shed the blood of Asahel his brother}.
28 When David heard this afterwards, he said: "I and my kingdom [are] innocent {before Yahweh} forever [for] the blood of Abner the son of Ner. 29 May [the blood] come down on the head of Joab and all the house of his father. {May the house of Joab never lack} [one with] a bodily discharge or [one with] leprosy or [one who] grasps the distaff or [one who] falls by the sword or [one who is] lacking food." 30 So Joab and Abishai, his brother, killed Abner because he had killed Asahel, their brother, at Gibeon in the battle.