14 Now the Spirit of the Lord had left Saul, and the Lord sent a tormenting spirit that filled him with depression and fear. 15 Some of Saul's servants said to him, "A tormenting spirit from God is troubling you. 16 Let us find a good musician to play the harp whenever the tormenting spirit troubles you. He will play soothing music, and you will soon be well again." 17 "All right," Saul said. "Find me someone who plays well, and bring him here." 18 One of the servants said to Saul, "One of Jesse's sons from Bethlehem is a talented harp player. Not only that-he is a brave warrior, a man of war, and has good judgment. He is also a fine-looking young man, and the Lord is with him." 19 So Saul sent messengers to Jesse to say, "Send me your son David, the shepherd."
Matthew Henry's Commentary on 1 Samuel 16:14-19
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.