1 Samuel 16:19-23

19Then Saul dispatched messengers to Jesse and said, “Send me your son David, who is with the sheep.”

20So Jesse took a donkey loaded with bread, a wineskin, and one young goat and sent them by his son David to Saul.

21When David came to Saul and entered his service, Saul loved him very much, and David became his armor-bearer.

22Then Saul sent word to Jesse: “Let David remain in my service, for he has found favor with me.”

23Whenever the spirit from God came on Saul, David would pick up his lyre and play, and Saul would then be relieved, feel better, and the evil spirit would leave him.