1 Samuel 16:17-21

And Saul said unto his servants, Provide me now a man that can play well, and bring him to me.

Then answered one of the servants, and said, Behold, I have seen a son of Jesse the Beth-lehemite, that is cunning in playing, and a mighty valiant man, and a man of war, and prudent in matters, and a comely person, and the LORD is with him.

Wherefore Saul sent messengers unto Jesse, and said, Send me David thy son, which is with the sheep.

And Jesse took an ass laden with bread, and a bottle of wine, and a kid, and sent them by David his son unto Saul.

And David came to Saul, and stood before him: and he loved him greatly; and he became his armourbearer.