Among a growing body of recent scholarship that has shown interest in the geneses, definitions, and assessments of secularism is Brad Gregory’s book The Unintended Reformation. This essay begins with a brief assessment of Gregory’s thesis. By way of response, it then offers four reflections on what are live challenges for those Christian communities committed to a refusal to withdraw from sharing and creating common life with others, and for whom the various reformations of the sixteenth century remain critical for the formation of their identities. The reflections concern (1) the character and conditions of belief; (2) the existence of the church in late Christendom; (3) the church’s worldliness; and (4) the character of faithful public life. Each of these themes has pressing implications for the ongoing life of the reformed project.