He shall flee from the iron weapon - The sword, or the spear. That is, he shall be exposed to attacks, and shall flee in cowardice and alarm. Bands of robbers shall come suddenly upon him, and he shall have no safety except in flight. Pref. Lee explains this as meaning, “While he flees from the iron weapon, the brass bow shall pierre him through.” Probably the expression is proverbial, like that in Latin, Incidit in Scyllam cupiens vitare Charybdin.
The bow of steel shall strike him through - That is, the “arrow” from the bow of steel shall strike him down. Bows and arrows were commonly used in hunting and in war. To a considerable extent they are still employed in Persia, though the use has been somewhat superseded by the gun. “Bows” were made of various materials. The first were, undoubtedly, of wood. They were inlaid with horn, or ivory, or were made in part of metal. Sometimes, it would seem that the whole bow was made of metal, though it is supposed that the metal bow was not in general use. The “weight,” if nothing else, would be an objection to it. The word which is here rendered “steel” (נחוּשׁה nechûshâh), means properly “brass or copper” - but it is certain that brass or copper could never have been used to form the main part of the bow, as they are destitute of the elasticity which is necessary. Jerome renders it, et irruet in arcum aereum - “he rushes on the brazen bow.” So the Septuagint, τόξον χάλκειον toxon chalkeion. So the Chaldee, דכוכומא קשתא - “the bow of brass.” There is no certain proof that “steel” was then known - though “iron” is often mentioned. It is possible, however, that though the whole bow was not made of brass or copper, yet that such quantities of these metals were employed in constructing bows, that they might, without impropriety, be called bows of brass. The Oriental bow consists of three parts. The handle, or middle part - that on which the arrow rested - was straight, and might be made of wood, brass, copper, or any other strong substance. To this was affixed, at each end, pieces of horn, or of any other elastic substance, and, the string was applied to the ends of these horns. The straight piece might have been of brass, and so without impropriety it might be called a brass bow. It is not properly rendered “steel” at any rate, as the word used here is never employed to denote iron or steel.