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 3:6

Abner Defects to David’s Camp

3:6 As the war continued between the house of Saul and the house of David, Abner was becoming more influential in the house of Saul.