1 Samuel 29:3

29:3 The leaders of the Philistines asked, “What about these Hebrews?” Achish said to the leaders of the Philistines, “Isn’t this David, the servant of King Saul of Israel, who has been with me for quite some time? I have found no fault with him from the day of his defection until the present time!”

1 Samuel 29:6

29:6 So Achish summoned David and said to him, “As surely as the Lord lives, you are an honest man, and I am glad to have you serving with me in the army. I have found no fault with you from the day that you first came to me until the present time. But in the opinion of the leaders, you are not reliable.