This week’s Torah reading of Tazri’a-M’tsora (Leviticus 12-15) is largely concerned with laws of purity and impurity relating to the disease of tsara’at, usually rendered as leprosy. Not only can this ailment infect people, but it can also afflict clothing and houses, in certain cases causing all vessels within a structure to contract ritual impurity. When a house appears infected, Scripture requires the owners to remove everything therein, and then ask a priest to inspect it, who will then either declare it pure or impure. Martha Himmelfarb examines the reasons for this step, and its significance for understanding the nature of Jewish law:

From synagogue shootings, to attacks on Jews on the streets, to the gathering strength and viciousness of anti-Zionism, especially in the corridors of political power, American Jewry has ample reason for concern about its safety and wellbeing. But, surveying both the present situation and the deep roots of what has made America a welcoming home to Jews with “no analogue in the 2,000 years after the destruction of the Temple,” Josef Joffe argues that the U.S. remains exceptional. The bad news, however, is still bad: