Leviticus 13:20-22

New Living Translation

²⁰ If the priest examines it and finds it to be more than skin-deep, and if the hair in the affected area has turned white, the priest must pronounce the person ceremonially unclean. The boil has become a serious skin disease. ²¹ But if the priest finds no white hair on the affected area and the problem appears to be no more than skin-deep and has faded, the priest must quarantine the person for seven days. ²² If during that time the affected area spreads on the skin, the priest must pronounce the person ceremonially unclean, because it is a serious disease.