Leviticus 13:7-9

New King James Version

⁷ But if the scab should at all spread over the skin, after he has been seen by the priest for his cleansing, he shall be seen by the priest again. ⁸ And if the priest sees that the scab has indeed spread on the skin, then the priest shall pronounce him ^[a]unclean. It is leprosy.

⁹ “When the leprous sore is on a person, then he shall be brought to the priest.