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.
NASB:
"Behold, I have made you a new, sharp threshing sledge with double edges; You will thresh the mountains and pulverize them, And will make the hills like chaff.
KJV:
Arise and thresh, O daughter of Zion: for I will make thine horn iron, and I will make thy hoofs brass: and thou shalt beat in pieces many people: and I will consecrate their gain unto the LORD, and their substance unto the Lord of the whole earth.
NASB:
"Arise and thresh, daughter of Zion, For your horn I will make iron And your hoofs I will make bronze, That you may pulverize many peoples, That you may devote to the LORD their unjust gain And their wealth to the Lord of all the earth.