Make bright; rather, polish, so that the arrows may penetrate easily (comp. Isaiah 49:2, "a polished shaft"). Gather the shields; rather, fill the shields (viz. with your arms); i.e. take hold of them.
Comp. the phrase, "to fill the hand with the bow" (2 Kings 9:24). The rendering" quivers" is wanting in philological authority, and seems to have been inferred from this passage, where, however, it is unnecessary.
The kings of the Medes. The prophet speaks of the Medes and not the Persians (comp. Isaiah 13:17).