I'm 25. It was only a couple years ago when I realized that I was rich. Not more rich than the guy down the road rich but more rich than mostly everyone else in the world rich.
Being born American means I was born into privilege. Privilege that I can use for good or evil. Sider lays out the biblical framework of why "rich Christians" should care about the poor of the earth and offers some insight into how we can help.
This book helps us to stop pretending that everything is hunky dory around the earth right now. Read it if you want your eyes open to a reality that you can do something about.