19 Now there was no blacksmith to be found throughout all the land of Israel, for the Philistines said, "Lest the Hebrews make swords or spears." 20 But all the Israelites would go down to the Philistines to sharpen each man's plowshare, his mattock, his ax, and his sickle; 21 and the charge for a sharpening was a pim for the plowshares, the mattocks, the forks, and the axes, and to set the points of the goads. 22 So it came about, on the day of battle, that there was neither sword nor spear found in the hand of any of the people who were with Saul and Jonathan. But they were found with Saul and Jonathan his son. 23 And the garrison of the Philistines went out to the pass of Michmash.
Matthew Henry's Commentary on 1 Samuel 13:19-23
Commentary on 1 Samuel 13:15-23
(Read 1 Samuel 13:15-23)
See how politic the Philistines were when they had power; they not only prevented the people of Israel from making weapons of war, but obliged them to depend upon their enemies, even for instruments of husbandry. How impolitic Saul was, who did not, in the beginning of his reign, set himself to redress this. Want of true sense always accompanies want of grace. Sins which appear to us very little, have dangerous consequences. Miserable is a guilty, defenceless nation; much more those who are destitute of the whole armour of God.