Leviticus 13:9-10

When the plague of leprosy (symptoms thereof) is in a man If the priest plainly see that it has reached not only the skin, and changed the hair, but eaten into the very flesh, so that he can see the whiteness there, as well as in the skin, he shall look upon it as an evident case, and without shutting him up for further trial, shall judge it a leprosy that has long been breeding, and of the worst kind, and accordingly shall remove the person out of the camp, that he may dwell by himself, Leviticus 13:46.