I Samuel 19:8

Another great defeat which David had inflicted upon the Philistines excited Saul to such an extent, that in a fit of insanity he endeavoured to pierce David with his javelin as he was playing before him. The words Ruach Jehovah describe the attack of madness in which Saul threw the javelin at David according to its higher cause, and that, as implied in the words Ruach Jehovah in contrast with Ruach Elohim (Sa1 18:10; Sa1 16:15), as inflicted upon him by Jehovah. The thought expressed is, that the growth of Saul's melancholy was a sign of the hardness of heart to which Jehovah had given him up on account of his impenitence. David happily escaped this javelin also. He slipped away from Saul, so that he hurled the javelin into the wall; whereupon David fled and escaped the same night, i.e., the night after this occurrence. This remark somewhat anticipates the course of the events, as the author, according to the custom of Hebrew historians, gives the result at once, and then proceeds to describe in detail the more exact order of the events.

Here I. David continues his good services to his king and country. Though Saul had requited him evil for good, and even his usefulness was the very thing for which Saul envied him, yet he did not therefore retire in sullenness and decline public service. Those that are ill paid for doing good, yet must not be weary of well doing, remembering what a bountiful benefactor our heavenly Father is, even to the froward and unthankful. Notwithstanding the many affronts Saul had given to David, yet we find him, 1. As bold as ever in using his sword for the service of his country, Sa1 19:8. The war broke out again with the Philistines, which gave David occasion again to signalize himself. It was a great deal of bravery that he charged them; and he came off victorious, slaying many and putting the rest to flight. 2. As cheerful as ever in using his harp for the service of the prince. When Saul was disturbed with his former fits of melancholy David played with his hand, Sa1 19:9. He might have pleaded that this was a piece of service now below him; but a humble man will think nothing below him by which he may do good. He might have objected the danger he was in the last time he performed this service for Saul, Sa1 18:10. But he had learned to render good for evil, and to trust God with his safety in the way of his duty. See how David was affected when his enemy was sick (Psa 35:13, Psa 35:14), which perhaps refers to Saul's sickness. II. Saul continues his malice against David. He that but the other day had sworn by his Maker that David should not be slain now endeavors to slay him himself. So implacable, so incurable, is the enmity of the serpent against that of the woman, so deceitful and desperately wicked is the heart of man without the grace of God, Jer 17:9. The fresh honours…