'Arm' in the Bible

How hast thou helped him that is without power! How hast thou saved the arm that hath no strength!

Then let my shoulder fall from the shoulder-blade, And mine arm be broken from the bone.

By reason of the multitude of oppressions they cry out; They cry for help by reason of the arm of the mighty.

And from the wicked their light is withholden, And the high arm is broken.

Or hast thou an arm like God? And canst thou thunder with a voice like him?