Leviticus 13:45

Verse 45. His clothes shall be rent, c.] The leprous person is required to be as one that mourned for the dead, or for some great and public calamity. He was to have his clothes rent in token of extreme sorrow his head was to be made bare, the ordinary bonnet or turban being omitted; and he was to have a covering upon his upper lip, his jaws being tied up With a linen cloth, after the same manner in which the Jews bind up the dead, which custom is still observed among the Jews in Barbary on funeral occasions: a custom which, from Ezekiel 24:17, we learn had prevailed very anciently among the Jews in Palestine. He was also to cry, Unclean, unclean, in order to prevent any person from coming near him, lest the contagion might be thus communicated and diffused through society; and hence the Targumist render it, Be not ye made unclean! Be not ye made unclean! A caution to others not to come near him.