'Arm' in the Bible

Therefore, tell the Israelis, "I am the LORD. I'll bring you out from under the burdens of the Egyptians, and I'll deliver you from their bondage. I'll redeem you with an outstretched arm and with great acts of judgment.

Dread and fear have fallen on them, because of the strength of your arm. They have become silent as a stone, until your people pass by, LORD, until this people you acquired pass by.