Leviticus 13:5–8

And the priest shall examine him on the seventh day, and if in his eyes the disease is checked and the disease has not spread in the skin, then the priest shall shut him up for another seven days. And the priest shall examine him again on the seventh day, and if the diseased area has faded and the disease has not spread in the skin, then the priest shall pronounce him clean; it is only an eruption. And he shall wash his clothes and be clean. But if the eruption spreads in the skin, after he has shown himself to the priest for his cleansing, he shall appear again before the priest. And the priest shall look, and if the eruption has spread in the skin, then the priest shall pronounce him unclean; it is a leprous disease.

On the seventh day the priest is to examine them, and if he sees that the sore is unchanged and has not spread in the skin, he is to isolate them for another seven days. On the seventh day the priest is to examine them again, and if the sore has faded and has not spread in the skin, the priest shall pronounce them clean; it is only a rash. They must wash their clothes, and they will be clean. But if the rash does spread in their skin after they have shown themselves to the priest to be pronounced clean, they must appear before the priest again. The priest is to examine that person, and if the rash has spread in the skin, he shall pronounce them unclean; it is a defiling skin disease.

The priest will then reexamine him on the seventh day. If he sees that the sore remains unchanged and has not spread on the skin, the priest will quarantine him for another seven days. The priest will examine him again on the seventh day. If the sore has faded and has not spread on the skin, the priest is to pronounce him clean; it is a scab. The person is to wash his clothes and will become clean. But if the scab spreads further on his skin after he has presented himself to the priest for his cleansing, he is to present himself again to the priest. The priest will examine him, and if the scab has spread on the skin, then the priest must pronounce him unclean; he has a serious skin disease.

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.

And the priest shall examine it on the seventh day, and if, in his eyes, the infection has stayed unchanged, the infection has not spread on the skin, then the priest shall confine him for seven days a second time. And the priest shall examine him on the seventh day for a second time, and if the infection has faded and the infection has not spread on the skin, then the priest shall declare him clean—it is an epidermal eruption; and he shall wash his garments, and so he shall be clean. But if the epidermal eruption spreads further on the skin after showing himself to the priest for his cleansing, then he shall appear a second time to the priest. And the priest shall examine it, and if the epidermal eruption has spread on the skin, then the priest shall declare him unclean—it is an infectious skin disease.

And the priest shall look on him the seventh day: and, behold, if the plague in his sight be at a stay, and the plague spread not in the skin; then the priest shall shut him up seven days more: And the priest shall look on him again the seventh day: and, behold, if the plague be somewhat dark, and the plague spread not in the skin, the priest shall pronounce him clean: it is but a scab: and he shall wash his clothes, and be clean. But if the scab spread much abroad in the skin, after that he hath been seen of the priest for his cleansing, he shall be seen of the priest again: And if the priest see that, behold, the scab spreadeth in the skin, then the priest shall pronounce him unclean: it is a leprosy.