Leviticus 13:3-10

³The priest will inspect whatever is on the skin. If the hair there has turned white and if the issue seems to be more than something on the surface, it is a serious skin disease, and the priest who inspects it will declare the person unclean.

⁴But if the spot is only a white discoloration and doesn't seem to be more than superficial, and if the hair on the spot has not turned white, the priest will place the person in isolation for seven days.

⁵On the seventh day the priest will conduct another inspection, and if he discovers that the spot hasn't changed and hasn't spread on the skin, the priest must place the person in isolation for another seven days.

⁶On the seventh day after this the priest will inspect it again. If the spot has faded and has not spread on the skin, the priest will declare the person clean since it was a rash. They must wash their clothes and will be clean.

⁷However, if the rash does spread after the person has been inspected by the priest and has been declared clean, the person must go back to be inspected again.

⁸If the priest discovers that the rash has spread, he must declare the person unclean because it is certainly a skin disease.

⁹Anyone who develops an infectious skin disease must be taken to the priest.

¹⁰The priest will inspect them, and if there is a white swelling on the skin and the hair there has turned white, and there is an open wound in the swelling,