Leviticus 13:12-17

12But if the leprosy break out much in the skin, and the leprosy cover all the skin of [him that hath] the sore, from his head even to his foot, wherever the eyes of the priest look,

13and the priest looketh, and behold, the leprosy covereth all his flesh, he shall pronounce [him] clean [that hath] the sore; it is all turned white; he is clean.

14And on the day when raw flesh appeareth in him, he shall be unclean.

15And the priest shall look on the raw flesh, and shall pronounce him unclean: the raw flesh is unclean, it is leprosy.

16But if the raw flesh change again, and be turned white, he shall come unto the priest;

17and the priest shall look on him, and behold, the sore is turned white; then the priest shall pronounce [him] clean [that hath] the sore: he is clean.