American Standard Version (ASV):
And his power shall be mighty, but not by his own power; and he shall destroy wonderfully, and shall prosper and do [his pleasure] ; and he shall destroy the mighty ones and the holy people.
King James Version (KJV):
And his power shall be mighty, but not by his own power: and he shall destroy wonderfully, and shall prosper, and practise, and shall destroy the mighty and the holy people.