He does an excellent job of presenting the biblical case and the statistical realities of who we are.
Personally, I am not one who enjoys many books that have a case to present backed with lots of Scripture and stats, but this was one I knew I had to read. It was an uncomfortable read in that it pointed out my sins and called for change. I pastor a church planted among the poor and this book reminded me of the scene in Schindler's List where the hero tearfully acknowledges that he could have done more to save the oppressed.
Not that this book is intended to bring a guilt trip... it's written to bring us back to God's heart for the poor and oppressed.
Dave & Heidi Blundell run an organization called 'Hungry For Life' with a vision of connecting churches and individuals to problem solvers around the globe.
You can check out their website here: http://www.hungryforlife.org/
You can order the book here: http://www.westbowpress.com/Bookstore/BookDetail.aspx?BookId=SKU-000169617