Leviticus 13:18-20

American Standard Version

¹⁸ And when the flesh hath in the skin thereof a boil, and it is healed, ¹⁹ and in the place of the boil there is a white rising, or a bright spot, reddish-white, then it shall be showed to the priest; ²⁰ and the priest shall look; and, behold, if the appearance thereof be lower than the skin, and the hair thereof be turned white, then the priest shall pronounce him unclean: it is the plague of leprosy, it hath broken out in the boil.