'Arm' in the Bible

With his arm he has done acts of power; he has put to flight those who have pride in their hearts.

So that the words of the prophet Isaiah might come true, when he said, Lord, who has any belief in our preaching? and the arm of the Lord, to whom has it been unveiled?

The God of this people Israel made selection of our fathers, lifting the people up from their low condition when they were living in the land of Egypt, and with a strong arm took them out of it.