Behold, I will make you into a threshing sledge, new and sharp, with many teeth. You will thresh the mountains and crush them, and reduce the hills to chaff.
KJV
Behold, I will make thee a new sharp threshing instrument having teeth: thou shalt thresh the mountains, and beat [them] small, and shalt make the hills as chaff.
ASV
Behold, I have made thee to be a new sharp threshing instrument having teeth; thou shalt thresh the mountains, and beat them small, and shalt make the hills as chaff.