1 Samuel 16:14-16

Now the Spirit of Jehovah departed from Saul, and an evil spirit from Jehovah troubled him. And Saul’s servants said unto him, Behold now, an evil spirit from God troubleth thee. Let our lord now command thy servants, that are before thee, to seek out a man who is a skilful player on the harp: and it shall come to pass, when the evil spirit from God is upon thee, that he shall play with his hand, and thou shalt be well.