'Arm' in the Bible

“Also concerning the foreigner who is not from Your people Israel, when he comes from a far country for Your great name’s sake and Your mighty hand and Your outstretched arm, when they come and pray toward this house,

With him is only an arm of flesh, but with us is the Lord our God to help us and to fight our battles.” And the people relied on the words of Hezekiah king of Judah.