Berean Study Bible
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.

King James Bible
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.

American Standard Version
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.

Darby Bible Translation
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.

Douay-Rheims Bible
And his power shall be strengthened, but not by his own force: and he shall lay all things waste, and shall prosper, and do more than can be believed. And he shall destroy the mighty, and the people of the saints,

English Revised Version
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.

Young's Literal Translation
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.