This chapter examines the Greek Orthodox Church against the background of the 1950s. It highlights the rise in religiosity and the upward social mobility of the Greek American second generation. It also explains how the Greek Orthodox church, which was on the margins of conversations about religion in America, found ways to become more relevant and somewhat mainstream. The chapter analyzes the unexpected development and importance of the Eastern Orthodox Churches to the Cold War policies of the United States. It also looks into the combination of powerful causes, such as the Cold War, social dislocation in suburbia, anxieties of the atomic age, and deliberate religious marketing that led to a remarkable spread of religious identification in postwar America.