1 Samuel 29:6-7

6So Achish summoned David and told him, “As the Lord lives, you are an honorable man. I think it is good to have you fighting in this unit with me, because I have found no fault in you from the day you came to me until today. But the leaders don’t think you are reliable.

7Now go back quietly and you won’t be doing anything the Philistine leaders think is wrong.”