en_tn_condensed/lev/14/04.md

the one to be cleansed

This can be translated in active form. Alternate translation: "the person he is cleansing" (See: rc://en/ta/man/translate/figs-activepassive)

clean birds

Birds that God allowed the people to eat and offer as sacrifices are spoken of as if they were physically clean. (See: rc://en/ta/man/translate/figs-metaphor)

scarlet yarn

"red yarn"

hyssop

an herb with a pleasant smell that was used for medicine (See: rc://en/ta/man/translate/translate-unknown)