Leviticus 13
18 Ref And if a bad place has come out on the skin and is well again,
19 Ref And on the same place there is a white growth of a bright mark, red and white, then let the priest see it;
20 Ref And after looking at it, if it seems to go deeper than the skin, and the hair on it is turned white, then the priest will say that the man is unclean: it is the leper's disease, it has come out in the bad place.