Bible Verses About Threshing: By instruments with teeth

Behold, I wil make thee a roller, and a newe threshing instrument hauing teeth: thou shalt thresh the mountaines, and bring them to pouder, and shalt make the hilles as chaffe.

Thus saith the Lord, For three transgressions of Damascus, and for foure I will not turne to it, because they haue threshed Gilead with threshing instruments of yron.