en_tn/num/16/39.md

that had been used by the men who were burned up

This can be stated in active form. AT: "that the men whom the fire had burned up had used" (See: rc://en/ta/man/translate/figs-activepassive)

become like Korah and his group

How they might become like them can be stated clearly. AT "die as Korah and his group had died" (See: rc://en/ta/man/translate/figs-explicit)