1 Samuel 30:15-16

15And David said to him, "Will you take me down to this band?" And he said, "Swear to me by God that you will not kill me or deliver me into the hands of my master, and I will take you down to this band."

16And when he had taken him down, behold, they were spread abroad over all the land, eating and drinking and dancing, because of all the great spoil they had taken from the land of the Philistines and from the land of Judah.