Leviticus 13:22 KJV
And if it spread much abroad in the skin, then the priest shall pronounce him unclean: it is a plague.
Leviticus 13:22, King James Version
In context
21 But if the priest look on it, and, behold, there be no white hairs therein, and if it be not lower than the skin, but be 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.