'Shield' in the Bible

They prepare the table, they set the watch, they eat, they drink: rise up, ye princes, anoint the shield.

And Elam bare the quiver, with chariots of men and horsemen; and Kir uncovered the shield.

Therefore thus saith Jehovah concerning the king of Assyria, He shall not come unto this city, nor shoot an arrow there, neither shall he come before it with shield, nor cast up a mound against it.