Bible Verses About Threshing: By instruments with teeth

"I will make you into a threshing-sledge, new, with sharp, pointed teeth, to thresh the mountains and crush them to dust, to reduce the hills to chaff.

Here is what ADONAI says: "For Dammesek's three crimes, no, four - I will not reverse it - because they threshed Gil'ad with an iron-spiked threshing-sledge;