"Not for the secular community"
This book seems very informative, and as an atheist, I'm happy there is a discussion about the true historic roots of many modern Christian rituals among those who wish to remain Christian/religious/etc.
My purpose for writing this review is to warn other secularist readers who are interested in the historical value of this book— it is fascinating to be sure! Be aware, however, that an equal portion of the book is essentially a sermon and philosophical argument from the author's very Christian point of view. I bought this book for the history behind Christian practices and wound up with a lot more preaching than I bargained for. If it doesn't bother you that this is a book by Christians for Christians, there's a lot of good stuff here.