This volume, by one of the foremost German theologians of today, is a title in the Library of Philosophy and Theology. As with much theological writing today, the book undertakes a critical appraisal of the thought of other theologians, with respect to the subject, more than it offers an original statement of the author's own position. The writing of Bultmann, Barth, Braun, Tillich, Bloch, Ebeling, and others, under review. The author acknowledges his restriction of his analysis to German theologians. The book is divided into three main sections: Consequences and Limits of the Existentialist Interpretation (of the existence of God); The Existence of God is Confessed by Christian Faith (in the Bible); and a brief appendix, reprinting a review by the author of J. A. T. Robinson's Honest To God. The growing urgency that the Christian understanding of God be re-thought and revitalized should make this a addition to the Library in which it appears. Its scholarly and complex theological reasoning and style probably will limit its readership to theologians and students.