2 Samuel 3:30

3:30 So Joab and his brother Abishai killed Abner, because he had killed their brother Asahel in Gibeon during the battle.

2 Samuel 3:1

3:1 However, the war was prolonged between the house of Saul and the house of David. David was becoming steadily stronger, while the house of Saul was becoming increasingly weaker.

2 Samuel 1:6-8

1:6 The young man who was telling him this said, “I just happened to be on Mount Gilboa and came across Saul leaning on his spear for support. The chariots and leaders of the horsemen were in hot pursuit of him. 1:7 When he turned around and saw me, he called out to me. I answered, ‘Here I am!’ 1:8 He asked me, ‘Who are you?’ I told him, ‘I’m an Amalekite.’