I Samuel 29:Verse 3

And the leaders of the Philistines said to Achish, “What do these Hebrews intend to do?” And Achish said to the leaders of the Philistines: “Could you be ignorant about David, who was the servant of Saul, the king of Israel, and who has been with me for many days, even years, and I have not found within him anything, from the day that he fled to me, even to this day?”