2 Samuel 3:22-27

22Just then the servants of David arrived with Joab from a raid, bringing much spoil with them. But Abner was not with David at Hebron, for he had sent him away, and he had gone in peace. 23When Joab and all the army that was with him came, it was told Joab, “Abner the son of Ner came to the king, and he has let him go, and he has gone in peace.” 24Then Joab went to the king and said, “What have you done? Behold, Abner came to you. Why is it that you have sent him away, so that he is gone? 25You know that Abner the son of Ner came to deceive you and to know ayour going out and your coming in, and to know all that you are doing.”

Joab Murders Abner

26When Joab came out from David’s presence, he sent messengers after Abner, and they brought him back from the cistern of Sirah. But David did not know about it. 27And when Abner returned to Hebron, Joab took him aside into the midst of the gate to speak with him privately, band there he struck him cin the stomach, so that he died, for the blood of Asahel his brother.
Copyright information for ESV