i.e. Even empty my quiver, and send upon them all my plagues, which, like arrows shot by a skilful and strong hand, shall speedily reach, and certainly hit, and mortally wound them. Compare Malachi 9:14.
Related Commentaries of Deuteronomy 32:23
Deuteronomy 32:23
23 I will heap mischiefs upon them; I will spend mine arrows upon them.