2 Samuel 2:8
David’s Army Clashes with the Army of Saul
2:8 Now Abner son of Ner, the general in command of Saul’s army, had taken Saul’s son Ish-bosheth and had brought him to Mahanaim.
2 Samuel 3:23
3:23 When Joab and all the army that was with him arrived, Joab was told: “Abner the son of Ner came to the king; he sent him away, and he left in peace!”
2 Samuel 3:25
3:25 You know Abner the son of Ner! Surely he came here to spy on you and to determine when you leave and when you return and to discover everything that you are doing!”