1 Samuel 29:8-9

8“But what have I done?” David said to Achish. “What have you found in your servant from the day I have been before you to this day, that I shouldn’t go and fight against the enemies of my lord the king?”

9“I know,” Achish answered saying to David. “You are as pleasing in my eyes as an angel of God. Nevertheless, the Philistine commanders have said, ‘He must not go up with us to the battle.’