This book explains why so many of the Christians one meets today don't seem to have a spiritual clue. This sad state of affairs began over a thousand years ago and continues today. FMG maps where Catholics and Protestants (who are all merely reacting against Catholics) went wrong. It is a gem of a book for anyone who wants to take spiritual growth in Christ with the same seriousness (and results!) that the earliest Christians did. My only criticism regards the book's cover. With all of the great Byzantine art available, why opt for a Western statue?