1 Samuel 31:3 - Joseph Benson’s Commentary on the Old and New Testaments

The archers hit him Hebrews ימצאהו jim-stauhu, found him. Houbigant renders it, rushed upon him. It seems by this that the Philistines gained the battle, chiefly by the advantage of their archers. Probably these were some hired troops, for we meet with no mention before this of any archers in any of the Philistines' armies or battles; and it seems to have been a way of fighting that Saul and the Israelites were not prepared for, and therefore they were soon thrown into confusion by it. “The use of the bow, however,” says Dr. Dodd, “was not unknown. Jonathan is celebrated for his skill and dexterity in it; and so were some of the worthies who resorted to David; but it seems not yet to have been brought into common practice, if, as has been collected from 2 Samuel 1:18, David, after this battle, had the Israelites taught the use of it.”