Figure for might, of God (Isaiah 53:1). "Break the arm," i.e. the power (Ezekiel 30:21). "Stretched out arm," image from a warrior with spear or sword thrust forth: all the power put forth (Joshua 8:26; Isaiah 5:25).
Bibliography Information Fausset, Andrew Robert M.A., D.D., "Definition for 'Arm' Fausset's Bible Dictionary". bible-history.com - Fausset's; 1878.