'Arm' in the Bible

Therefore, tell the Israelites, 'I am the Lord. I will bring you out from your enslavement to the Egyptians, I will rescue you from the hard labor they impose, and I will redeem you with an outstretched arm and with great judgments.

Fear and dread will fall on them; by the greatness of your arm they will be as still as stone until your people pass by, O Lord, until the people whom you have bought pass by.