As a diplomat's son, star athlete, and Harvard Law School graduate, in the early 1980s Joseph Holland had a world of opportunities awaiting him on Wall Street and in corporate America. Instead, Holland moved to the inner city, driven by a divine calling full of unfolding mystery and challenge. He found himself in Harlem during the nadir of its blight and endeavored to contribute to a neighborhood that was tough in every sense of the word. A Republican...