1st Samuel 16:13

10 And Jesse made seven of his sons to pass before Samuel. And Samuel said unto Jesse, Jehovah hath not chosen these.

11 And Samuel said unto Jesse, Are here all thy children? And he said, There remaineth yet the youngest, and, behold, he is keeping the sheep. And Samuel said unto Jesse, Send and fetch him; for we will not sit down till he come hither.

12 And he sent, and brought him in. Now he was ruddy, and withal of a beautiful countenance, and goodly to look upon. And Jehovah said, Arise, anoint him; for this is he.

13 Then Samuel took the horn of oil, and anointed him in the midst of his brethren: and the Spirit of Jehovah came mightily upon David from that day forward. So Samuel rose up, and went to Ramah.

14 Now the Spirit of Jehovah departed from Saul, and an evil spirit from Jehovah troubled him.

15 And Saul`s servants said unto him, Behold now, an evil spirit from God troubleth thee.

16 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.