We are all dirty with sin. Even our good works are not pure. They are like bloodstained rags. We are all like dead leaves. Our sins have carried us away like wind.
it is leprosy that has been there for a long time. The priest must announce that the person is unclean. He does not have to wait until after a period of separation, because he already knows that the person is unclean.
If the priest sees that the skin disease covers the whole body and that it has turned all the skin white, the priest must announce that the person is clean.