1 Samuel 29:6-7

6So Achish summoned David and told him, “As surely as the LORD lives, you have been upright, and it seems right in my sight that you should march in and out with me in the army, because I have found no fault in you from the day you came to me until this day. But you are not good in the sight of the leaders. 7Therefore turn back now and go in peace, so that you will not do anything to displease the leaders of the Philistines.”