Instead, all the Israelites would go down to the Philistines to sharpen their plowshares, mattocks, axes, and sickles.
Here, 1. Samuel departs in displeasure. Saul has set up for himself, and now he is left to himself: Samuel gat him from Gilgal (Sa1 13:15), and it does not appear that he either prayed with Saul or directed him. Yet in going up to Gibeah of Benjamin, which was Saul's city, he intimated that he had not quite abandoned him, but waited to do him a kindness another time.
Commenting on 1 Samuel 13:15-23
But all the Israelites went down to the Philistines,.... Were obliged to go into Palestine, into some one or other of the cities of the Philistines, or to their garrisons, where the trade of a smith was exercised: to sharpen every man his share, and his coulter; which are the parts of the plough made of iron, with which the earth is cut and thrown...
But all the Israelites went down to the Philistines - We find from this that they did not grant them as much as Porsenna did to the Romans; he permitted the people to manufacture the implements of husbandry.