en_tn/num/05/02.md

oozing sore

This refers to an open cut that has been leaking fluids for a long time.

whoever is unclean through touching a dead body

If a person touched a dead body they were considered unclean. A person who is not acceptable for God's purposes is spoken of as if the person were physically unclean. (See: rc://en/ta/man/jit/figs-metaphor)