Clear, compact, and conclusive, Faith in a Day of Unbelief comes with vigor to a world seeking for security. To Latter-day Saints it lends reinforcement to their beliefs, clarifying and giving chapter and verse for further strength. To the investigator it affords a straightforward presentation of LDS first principles. To the non-member who reads, the book offers convincing evidence that will encourage further study. Dr. Yarn is so convincing and so explicit in the development of the material that it should prove of great assistance to the missionary, to the teacher in the auxiliaries and the priesthood, and to the lay Church member in his home. Dr. Yarn furthermore issues some direct challenges to all readers concerning their own response to what he attests. Faith in a Day of Unbelief fills a felt need for an understanding and at the same time a scholarly approach to a study of the principles of the gospel.