Leviticus 13:7-9

American Standard Version

⁷ But if the scab spread abroad in the skin, after that he hath showed himself to the priest for his cleansing, he shall show himself to the priest again: ⁸ and the priest shall look; and, behold, if the scab be spread in the skin, then the priest shall pronounce him unclean: it is leprosy.

⁹ When the plague of leprosy is in a man, then he shall be brought unto the priest;