2 Samuel 3:26-28

New Century Version

²⁶ After Joab left David, he sent messengers after Abner, and they brought him back from the well of Sirah. But David did not know this. ²⁷ When Abner arrived at Hebron, Joab took him aside into the gateway. He acted as though he wanted to talk with Abner in private, but Joab stabbed him in the stomach, and Abner died. Abner had killed Joab’s brother Asahel, so Joab killed Abner to pay him back.

²⁸ Later when David heard the news, he said, “My kingdom and I are innocent forever of the death of Abner son of Ner. The Lord knows this.