If the priest sees that the rash has indeed spread on the skin, he is to pronounce him unclean; it is a defiling skin disease.
In context
6On the seventh day the priest is to examine him again, and if the sore has faded and has not spread on the skin, the priest is to pronounce him clean; it is only a rash. He must wash his clothes, and he will be clean. 7But if the rash spreads further on his skin after he has shown himself to the priest for his cleansing, he must be examined again. 8If the priest sees that the rash has indeed spread on the skin, he is to pronounce him unclean; it is a defiling skin disease. 9When someone has a defiling skin disease, he must be brought to the priest. 10The priest is to examine him, and if there is a white swelling on the skin that has turned the hair white, with raw flesh showing in the swelling,