איוב לט:כג פירוש: רש״י

The quiver...rattles [i.e., the quiver that is] full of arrows, and they knock against each other so that their sound is heard.

the blade of the spear An iron utensil (and an iron spear) is called לַהַב, as in (Jud. 3:22), “and the haft also went in after the blade (הלהב).”