1 Samuel 13:21

13:21 They 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.

1 Samuel 13:20

13:20 So all Israel had to go down to the Philistines in order to get their plowshares, cutting instruments, axes, and sickles sharpened.