1 Samuel 29:3-5

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.”

4But the Philistine officers were angry with Achish. “Send the man back,” the Philistine officers told him. “Return him to the place you assigned him. He shouldn’t go with us into battle. He shouldn’t ⌞be allowed to⌟ become our enemy during the battle. Is this man going to try to regain his master’s favor? He’ll do it with the lives of our men!

5Isn’t this David of whom people sing in dances: ‘Saul has defeated thousands but David tens of thousands’?”