'Arm' in the Bible

Therefore, say to the children of Israel, ‘I am the Lord, and I will bring you out from under the burdens of the Egyptians, and I will free you from their bondage. I will redeem and rescue you with an outstretched (vigorous, powerful) arm and with great acts of judgment [against Egypt].

Terror and dread fall on them;Because of the greatness of Your arm they are as still as a stone;Until Your people pass by and [into Canaan], O Lord,Until the people pass by whom You have purchased.