Leviticus 13:18-20

BSB(i) 18 When a boil appears on someone’s skin and it heals, 19 and a white swelling or a reddish-white spot develops where the boil was, he must present himself to the priest. 20 The priest shall examine it, and if it appears to be beneath the skin and the hair in it has turned white, the priest shall pronounce him unclean; it is a diseased infection that has broken out in the boil.