This book could shake a person's faith, if you let it. I'm not at all sure whether the author actually believes what he has written, or if he starts with the assumption that miracles are impossible in order to appeal to the "non-religious." The conclusions at the end of the books are worth the read, and can be accepted without denying the Incarnation and Resurrection, not to mention other scriptural miracles. A good counter to thisa book is C.S. Lewis' *Miracles.*
Great! Too many texts/books present the "magic" Jesus which presents the strangely "awesome" God rather than the God of awesome intelligence, creativity, and compassion. Spong probably won't appeal to the fundamentalist who will be shocked by what he has written, nor to the traditionalist who expects the "experts" to decide the definition of God. Whether or not you agree with Spong BEFORE you read the book, there are bound to be items that you will end up agreeing with AFTER you've finished.