Interesting and very well researched and written, but ultimately unnecessary. Obviously there's conclusions I don't agree with and disagreements over minor theological ideas, but my main problem is that this book didn't seem to contribute anything into practical Christianity: reaching the lost, encountering God in a deeper way, discipleship, etc. It seemed more like a call to return to tradition rather than adapt. Individual contexts are not considered, nor how disastrous it would be in a post-Christian setting to return to a more "legalistic" if much richer worship concept. I recommend reading it, I recommend owning a copy of this book, but as a church leader, nothing in this book is relevant to my ministry and purpose.