1 Samuel 29:6-7

6And Achish called David, and said to him, [As] Jehovah liveth, thou art upright, and thy going out and thy coming in with me in the camp is acceptable to me; for I have not found evil in thee since the day of thy coming to me to this day; but thou art not acceptable to the lords.

7And now return, and go in peace, that thou displease not the lords of the Philistines.