“When a man has on the skin of his body a swelling or an eruption or a spot, and it turns into a leprous disease on the skin of his body, then he shall be brought to Aaron the priest or to one of his sons the priests,
and the priest shall examine him the seventh day; if it is spreading in the skin, then the priest shall pronounce him unclean; it is a leprous disease.
and the priest shall examine him again on the seventh day, and if the diseased spot is dim 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.