This book investigates how Dietrich Bonhoeffer’s theological concepts, particularly his notion of a 'religionless Christianity,' remain applicable to modern secular society. Edwin Hanton Robertson, a noted scholar and broadcaster, draws upon Bonhoeffer’s prison writings and correspondence to construct a framework for ethical living in a post-religious world. The author argues that Bonhoeffer’s call for a 'non-religious interpretation' of biblical concepts provides a viable path for faith in an increasingly secularized global landscape.

Scholars and theologians frequently cite this work as a clear, accessible entry point for understanding the complex later writings of Bonhoeffer. It is often utilized in academic and church study groups to bridge the gap between historical theology and contemporary ethical application.