en_tn_lite_do_not_use/isa/66/16.md

with his sword

"Sword" is one weapon that represents all of warfare and killing. (See: rc://en/ta/man/translate/figs-synecdoche)

Those killed by Yahweh will be many

This can be stated in active form. Alternate translation: "Yahweh will kill many people" (See: rc://en/ta/man/translate/figs-activepassive)