I Samuel 29:6-7

Then Achish called David and said to him, “Surely, as the LORD lives, you have been upright, and your going out and your coming in with me in the army is good in my sight. For to this day I have not found evil in you since the day of your coming to me. Nevertheless the lords do not favor you. Therefore return now, and go in peace, that you may not displease the lords of the Philistines.”