4 If the bright spot is white in the skin of his body, and its appearance isn't deeper than the skin, and its hair hasn't turned white, then the priest shall isolate the infected person for seven days.
*Minor differences ignored. Grouped by changes, with first version listed as example.
If the bright spot be white in the skin of his flesh,.... The Targum of Jonathan is, white as chalk in the skin of his flesh; but other Jewish writers make the whiteness of the bright spot to be the greatest of all, like that of snow; See Gill on Leviticus 13:2,
and in sight be not deeper than the skin, and the hair thereof be not turned white; though it be a bright spot, and be very white, yet these two marks not appearing, it cannot be judged a leprosy, at most it is only suspicious: wherefore
then the priest, shall shut up him that hath the plague seven days; in whom the bright spot is, and of whom there is a suspicion of the plague of leprosy, but it is not certain; and therefore, in order to take time, and get further knowledge, the person was to be shut up from all company and conversation for the space of seven days; by which time it might be supposed, as Ben Gersom observes, that the case and state of the leprosy (if it was one) would be altered; and Aben Ezra remarks, that most diseases change or alter on the seventh day.
Seven days - For greater assurance; to teach ministers not to be hasty in their judgments, but diligently to search and examine all things before - hand. The plague is here put for the man that hath the plague.
*More commentary available at chapter level.