1 Samuel 29:4
4But the princes of the Philistines were angry with him; so the princes of the Philistines said to him, "Make this fellow return, that he may go back to the place which you have appointed for him, and do not let him go down with us to battle, lest in the battle he become our adversary. For with what could he reconcile himself to his master, if not with the heads of these men?