'Arrows' in the Bible

For, lo, I will stir up and cause to come up against Babylon a company of great nations from the north country; and they shall set themselves in array against her; from thence she shall be taken: their arrows shall be as of an expert mighty man; none shall return in vain.

Set yourselves in array against Babylon round about, all ye that bend the bow; shoot at her, spare no arrows: for she hath sinned against Jehovah.

Make sharp the arrows; hold firm the shields: Jehovah hath stirred up the spirit of the kings of the Medes; because his purpose is against Babylon, to destroy it: for it is the vengeance of Jehovah, the vengeance of his temple.