Thus shall ye separate the children of Israel from their uncleanness,.... Or because of it, and while they are in it, as from other persons, even their nearest relations, and from the house of God, as the next clause shows; or teach them, by observing the above laws and rules, to separate themselves, and that they be careful and cautions to keep themselves apart while in such impurities; and the children of Israel are only made mention of, because these laws are only binding upon them, with their proselytes and servants, free or not free , but not upon Gentiles; See Gill on "Le 15:2":that they die not in their uncleanness, when they defile my tabernacle that [is] among them; from whence it appears, that men and women, in the above circumstances, might not go into the tabernacle; and it was chiefly to prevent their access to it that these laws were given, for the greater reverence and honour of it; and that for such persons to enter there was a pollution of it, and the punishment was cutting off, or death; and for one to die in his impurity, without purification and sacrifice, was a dreadful thing, and to be deprecated, and to be guarded against by an observance of the above laws.
But the Jews now say , that forasmuch as the reason of these precepts was, because such persons were forbidden to enter into the temple, that being destroyed, all these precepts of uncleanness are ceased also.
Misn. Zabim, c. 2. sect. 1. Leo Modena's History of Rites, Customs, &c. of the present Jews, par. 1. c.