18 Then answered one of the young men, and said, Behold, I have seen a son of Jesse the Beth-lehemite, that is skilful in playing, and a mighty man of valor, and a man of war, and prudent in speech, and a comely person; and Jehovah is with him. 19 Wherefore Saul sent messengers unto Jesse, and said, Send me David thy son, who is with the sheep. 20 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. 21 And David came to Saul, and stood before him: and he loved him greatly; and he became his armorbearer. 22 And Saul sent to Jesse, saying, Let David, I pray thee, stand before me; for he hath found favor in my sight. 23 And it came to pass, when the [evil] spirit from God was upon Saul, that David took the harp, and played with his hand: so Saul was refreshed, and was well, and the evil spirit departed from him.
Matthew Henry's Commentary on 1 Samuel 16:18-23
Commentary on 1 Samuel 16:14-23
(Read 1 Samuel 16:14-23)
Saul is made a terror to himself. The Spirit of the Lord departed from him. If God and his grace do not rule us, sin and Satan will have possession of us. The devil, by the Divine permission, troubled and terrified Saul, by the corrupt humours of his body, and passions of his mind. He grew fretful, peevish, and discontented, and at times a madman. It is a pity that music, which may be serviceable to the good temper of the mind, should ever be abused, to support vanity and luxury, and made an occasion of drawing the heart from God and serious things. That is driving away the good Spirit, not the evil spirit. Music, diversions, company, or business, have for a time often been employed to quiet the wounded conscience; but nothing can effect a real cure but the blood of Christ, applied in faith, and the sanctifying Spirit sealing the pardon, by his holy comforts. All other plans to dispel religious melancholy are sure to add to distress, either in this world or the next.