1 Samuel 13:19-21

19A blacksmith could not be found in all the land of Israel, for the Philistines had said, “This will prevent the Hebrews from making swords and spears.”

20So all Israel had to go down to the Philistines in order to get their plowshares, cutting instruments, axes, and sickles sharpened.

21They charged two-thirds of a shekel to sharpen plowshares and cutting instruments, and a third of a shekel to sharpen picks and axes, and to set ox goads.