1 Samuel 29:6-7

6Then Achish called David and said to him, “As the Lord lives, you have been upright (righteous), and your behavior in the army is pleasing in my sight. For from the day you came to me to this day I have found no evil in you. Nevertheless, the [Philistine] lords do not approve of you.

7So return now and go in peace [to your place], so that you do not displease the Philistine lords.”