Domestically and abroad, America is known as the richest country in the world. It is hard not to be impressed by the standard of living in the nation s most affluent suburban and urban neighborhoods. Yet, scattered amid stretches that abound in wealth, the country is home to neighborhoods rife with violence, poverty, segregation, and decay. Within these blighted urban landscapes, however, there is at least one notable example of plenty: churches. They do not always appear as traditional houses of worship, but often emerge from the retrofitted shells of former storefronts, garages,...