Then David came to Saul and 1attended him; and Saul loved him greatly, and he became his armor bearer.
References for 1 Samuel 16:21
Saul sent to Jesse, saying, "Let David now stand before me, for he has found favor in my sight."
So it came about whenever 2the evil spirit from God came to Saul, David would take the harp and play it with his hand; and Saul would be refreshed and be well, and the evil spirit would depart from him.
References for 1 Samuel 16:23