'Coats' in the Bible

Gird the horses, and go up, ye horsemen, And station yourselves with helmets, Polish the javelins, put on the coats of mail.

Do not give her archers time to string their bows or to put on their coats of armor. Do not spare any of her young men. Completely destroy her whole army.

Sharpen the arrows, take up the shields [and cover yourselves]!The Lord has stirred up the spirit of the kings of the Medes,Because His purpose concerning Babylon is to destroy it;For that is the vengeance of the Lord, vengeance [on Babylon] for [plundering and destroying] His temple.