1 Samuel 29:2-3

2The Philistine leaders were marching by with their companies and regiments. David and his men were marching in the rear with Achish.

3The Philistine officers asked, “What are these Hebrews doing here?” Achish asked the Philistine officers, “Isn’t this David, the servant of King Saul of Israel, who has been with me now for a year or two? I’ve found nothing wrong with him from the day he defected until now.”