We Jews, who have been perennial outcasts, ought to read the Torah’s account of the leper with particular care.“Leper,” we should note from the outset, is not really an accurate rendering of the Hebrew, מצורע (metzora).  The biblical affliction of tza’arat is clearly different from what we today call “leprosy,” most obviously so because it can only be fully cured by spiritual means.  Yet the King James translation is helpful in its way, not only because it reminds us of similar symptoms, but also because it gives us a familiar historical point of comparison. Toward the end of last week’s parashah, Tazria, the Torah begins to catalog all manner of skin afflictions and finally comes upon tzara’at—what we’ll call leprosy for the time being.  Then, in Parashat Metzora, we move to the process for curing the leper.