Leviticus 13:3-10

³Then the priest will examine the disease in the skin of his body. If the hair in the diseased area has turned white, and if the disease appears to be deeper than just on the skin, then it is an infectious disease. After the priest examines him, he must pronounce him unclean.

⁴If the bright spot in his skin is white, and the appearance of it is no deeper than the skin, and if the hair in the diseased area has not turned white, then the priest must isolate the one with the disease for seven days.

⁵On the seventh day, the priest must examine him to see if in his opinion the disease is not any worse, and if it has not spread in the skin. If it has not, then the priest must isolate him seven days more.

⁶The priest will examine him again on the seventh day to see if the disease is better and has not spread farther in the skin. If it has not, then the priest will pronounce him clean. It is a rash. He must wash his clothes, and then he is clean.

⁷But if the rash has spread in the skin after he has shown himself to the priest for his cleansing, he must then show himself to the priest again.

⁸The priest will examine him to see if the rash has spread farther in the skin. If it has spread, then the priest must pronounce him unclean. It is an infectious disease.

⁹When an infectious skin disease is in someone, then he must be brought to the priest.

¹⁰The priest will examine him to see if there is a white swelling in the skin, if the hair has turned white, or if there is raw flesh in the swelling.