1 Samuel 13:19-22

19No blacksmith could be found in the entire land of Israel. In this way the Philistines kept the Hebrews from making swords and spears.

20Everyone in Israel had to go to the Philistines to sharpen the blade of his plow, his mattock, ax, or sickle.

21The price was a pim  for plow blades and mattocks, and one-tenth of an ounce of silver to sharpen a mattock or set a metal point on a cattle-prod.

22So on the day of battle, not one sword or spear could be found among all the troops who were with Saul and Jonathan. But Saul and his son Jonathan had them.