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.

His power will be great, but it will not be his own. He will cause terrible destruction and succeed in whatever he does. He will destroy the mighty men along with the holy people.

and his power hath been mighty, and not by his own power; and wonderful things he destroyeth, and he hath prospered, and wrought, and destroyed mighty ones, and the people of the Holy Ones.

And his power shall be mighty, but not by his own power; and he shall destroy marvellously, and shall prosper, and shall practise, and shall destroy the mighty ones, and the people of the saints.