is a brilliant and well-documented book that reveals the tension between the church and Christendom. According to Leonard Verduin, the American formula of a society in which no religion is designated as the right religion, is the result of pioneering done by the "stepchildren" of the Reformation. To them, rather than to the Reformers, do we owe the concept of separation of church and state. Taking the several terms of opprobrium that the Reformers hurled at these stepchildren, Verduin gives a penetrating historical analysis of each and shows how each term sets in focus an important phase of the master struggle, the struggle regarding the delineation of the church.