'Threshing sledge' in the Bible
And the people which were in it he brought forth, and he will put at the saw and at the threshing-sledge of iron, and at axes of iron, and caused them to pass over through the brick-kiln: and thus he will do to all the cities of the sons of Ammon. And David will turn back, and all the people, to Jerusalem.
Araunah said to David, "Let my lord the king take and offer what [is] good in his eyes. Look, here [are] the cattle for the burnt offering and the threshing sledge and the yokes of the oxen for the firewood.
His under parts are sharp potsherds: he spreadeth a threshing-sledge upon the mire.
For dill is not threshed with a threshing sledge,Nor is the cartwheel driven over cummin;But dill is beaten out with a rod, and cummin with a club.
"Look, I am making you like a sharp threshing sledge, new and double-edged. You will thresh the mountains and crush them; you will make the hills like straw.