1 Samuel 29:9-11

But Achish replied to David, “I know that you are pleasing in my sight, like an angel of God; nevertheless the commanders of the Philistines have said, ‘He must not go up with us to the battle.’ Now then arise early in the morning with the servants of your lord who have come with you, and as soon as you have arisen early in the morning and have light, depart.” So David arose early, he and his men, to depart in the morning to return to the land of the Philistines. And the Philistines went up to Jezreel.