Leviticus 13:22-27

²²And if it now spread abroad in the skin, then shall the priest pronounce him unclean: it is the plague of leprosy.

²³But if the bright spot remain in its place, and spread not, it is a scar of the inflammation; and the priest shall pronounce him clean.

²⁴Or if there be a person in whose skin there is a place burnt by fire, and the mark of the burning become a bright spot, white and dark red, or white;

²⁵And if the priest see it, and, behold, the hair in the bright spot have been turned white, and its appearance be deeper than the skin: it is leprosy, broken out in the fire-wound; and the priest shall pronounce him unclean, it is the plague of leprosy.

²⁶But if the priest see it, and, behold, there be in the bright spot no white hair, and it be not lower than the skin, and it be pale: then shall the priest shut him up seven days.

²⁷And the priest shall see him on the seventh day: if now it have spread abroad in the skin, then shall the priest pronounce him unclean: it is the plague of leprosy.