The pope's methodology is to take a scene from the Bible, like the Lord's baptism and then to draw on that scene from the entire Bible, to show what modern scholarship has done to help us to understand the historical context of the scene, tell us how the early Church fathers interpreted the scene, how would it have been viewed in Judaism (he uses the reflections of a Rabbi when discussing the Sermon on the Mount) and then to give the reader the meaning of this event for them. Along the way he answers questions to the many objections modern people bring to their encounter with Jesus.
As someone who has studied theology for a number of years and been exposed to every screwball theology out there, I found this book to be a corrective lens to refocus and correct my vision of who Jesus is and what following him means. What impresses me (and I'm not easily impressed) is that the Pope takes on the "screwball (my term, not his)" theologies in such a way as to making them seem silly (although he is incredibly charitable in his approach).
This book will have a great effect on renewing the Church and centering it on an image of Christ that is Biblical and credible, erasing years of poor and faulty preaching and teaching.
If you are not Catholic, but a Christian you will love this book too. In fact I predict you will be come a big fan of Joseph Ratzinger and will want to read his many published works to encounter someone rooted in Scripture and conversant with modern attacks on it. If you are a non Christian I think you will find in the book an excellent introduction to what Christians believe about the God-man from Nazareth. To all you parents out there who sent your kids to Catholic schools and now wish they would practice their faith, give them this book and reintroduce them to Jesus of Nazareth.