You don't need to agree with everything in this book (and no doubt you won't as there is so much in it) in order to get a lot out of it. Barna and Viola look at the moderrn practices of our churches and ask where they come from. Often, it is not from the Bible - though they do at least point out that just because it isn't in the Bible doesn't make it wrong; it's just a warning over why we claim we do what we do. Lots to think about. Recommended.