Leviticus 13:21-23

21st Century King James Version

²¹ But if the priest look on it, and behold, there are no white hairs therein and if it is not lower than the skin, but is somewhat dark, then the priest shall shut him up seven days.

²² And if it spread much abroad in the skin, then the priest shall pronounce him unclean; it is a plague.

²³ But if the bright spot stay in his place and spread not, it is a burning boil; and the priest shall pronounce him clean.