When the priest sees the raw flesh, he must pronounce him unclean. The raw flesh is unclean; it is a skin disease.
I. Concerning the plague of leprosy we may observe in general, 1. That it was rather an uncleanness than a disease; or, at least, so the law considered it, and therefore employed not the physicians but the priests about it. Christ is said to cleanse lepers, not to cure them.
Commenting on Leviticus 13:1-17
And the priest shall see the raw flesh,.... Or when he sees it, the person being brought to him to be viewed: and pronounce him to be unclean; or shall pronounce him to be unclean: for the raw flesh is unclean; made a man so in a ceremonial sense; See Gill on Lev 13:10, it is a leprosy; wherever any quick raw flesh appears in a swelling.
And the priest shall see the raw flesh, and pronounce him to be unclean: [for] the raw flesh [is] unclean: it [is] a leprosy. (f) That is, declares that the flesh is not found, but is in danger of being leprous.