The LORD said to Moses and Aaron, “If anyone has a swelling or a rash or discolored skin that might develop into a serious skin disease, that person must be brought to Aaron the priest or to one of his sons. The priest will examine the affected area of the skin. If the hair in the affected area has turned white and the problem appears to be more than skin-deep, it is a serious skin disease, and the priest who examines it must pronounce the person ceremonially unclean.
“But if the affected area of the skin is only a white discoloration and does not appear to be more than skin-deep, and if the hair on the spot has not turned white, the priest will quarantine the person for seven days. On the seventh day the priest will make another examination. If he finds the affected area has not changed and the problem has not spread on the skin, the priest will quarantine the person for seven more days. On the seventh day the priest will make another examination. If he finds the affected area has faded and has not spread, the priest will pronounce the person ceremonially clean. It was only a rash. The person’s clothing must be washed, and the person will be ceremonially clean. But if the rash continues to spread after the person has been examined by the priest and has been pronounced clean, the infected person must return to be examined again. If the priest finds that the rash has spread, he must pronounce the person ceremonially unclean, for it is indeed a skin disease.
“Anyone who develops a serious skin disease must go to the priest for an examination. If the priest finds a white swelling on the skin, and some hair on the spot has turned white, and there is an open sore in the affected area, it is a chronic skin disease, and the priest must pronounce the person ceremonially unclean. In such cases the person need not be quarantined, for it is obvious that the skin is defiled by the disease.
“Now suppose the disease has spread all over the person’s skin, covering the body from head to foot. When the priest examines the infected person and finds that the disease covers the entire body, he will pronounce the person ceremonially clean. Since the skin has turned completely white, the person is clean. But if any open sores appear, the infected person will be pronounced ceremonially unclean. The priest must make this pronouncement as soon as he sees an open sore, since open sores indicate the presence of a skin disease. However, if the open sores heal and turn white like the rest of the skin, the person must return to the priest for another examination. If the affected areas have indeed turned white, the priest will then pronounce the person ceremonially clean by declaring, ‘You are clean!’
“If anyone has a boil on the skin that has started to heal, but a white swelling or a reddish white spot develops in its place, that person must go to the priest to be examined. 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. 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. 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. But if the area grows no larger and does not spread, it is merely the scar from the boil, and the priest will pronounce the person ceremonially clean.