Leviticus 13:12-17

12“And if leprosy breaks out all over the skin, and the leprosy covers all the skin of the one who has the sore, from his head to his foot, wherever the priest looks,

13then the priest shall consider; and indeed if the leprosy has covered all his body, he shall pronounce him clean who has the sore. It has all turned white. He is clean.

14But when raw flesh appears on him, he shall be unclean.

15And the priest shall examine the raw flesh and pronounce him to be unclean; for the raw flesh is unclean. It is leprosy.

16Or if the raw flesh changes and turns white again, he shall come to the priest.

17And the priest shall examine him; and indeed if the sore has turned white, then the priest shall pronounce him clean who has the sore. He is clean.