Firstly - I am a Christian, therefore I obviously read the book with different eyes to the previous reviews.
The book is easy to understand without being patronising, and the authors obviously know their history and culture, as well as their bible. I found this book useful for several reasons. First it reviewed the reasons why the biblical accounts are trustworthy (note I say reviewed - the aim of the book did not seem to be a defence of the historical accuracys of the bible, rather a brief review evidence included in other books)
It also explained the religous, political and cultural context well, better than I have read in other books. I feel it discussed other views of Jesus and was convincing in defending the standard christian view of who Jesus is and his ministry. I found the descriptions of his activities, which were often placed in chronological order rather than the order discussed in the gospels, helped me to see many of the events in the bible in a new light.
As for previous comments that all sources are drawn from the bible, this is not true. Whilst many are, several are drawn from contemporary historians. And the fact is that most of the information we have about Jesus is in the bible. Writings by historians of the day are included where relevant. And the comment that it shows only a christian view is to be expected - Indeed the authors explain in the introduction that this is their view and the book explains the reasons for that view. If you are not interested in reading about the christian view of Jesus, this is not the book for you. If you are, for maybe no other reason than to understand why (or how) Christians beleive what they believe, this is the best book I have read on the subject.