In India I worshiped among leprosy patients. Most of the medical advances in the treatment of leprosy came about as a result of missionary doctors, who were willing to live among patients and risk exposure to the dreaded disease. As a result, churches thrive in most major leprosy centers. In Myanmar I visited homes for AIDS orphans, where Christian volunteers try to replace parental affection the disease has stolen away. The most rousing church services I have attended took place in Chile and Peru, in the bowels of a federal prison. Among the lowly, the wretched, the downtrodden—the rejected of…