Dave Ramsey did a phone interview with businessman and author of Thou Shall Prosper: Ten Commandments for Making Money, Rabbi Daniel Lapin. After Dave became frieds of Rabbi Lapin he gave everyone in his company a copy of this book and it's now on his recommended reading list.
It will take you some time to work through this book. It's full of wisdom. Growing up in a Christian environment, I have to tell you that it was refreshing to hear business and Biblical teaching from the perspective of the Jewish culture. I can't begin to share with you all of the nuggets I gained from this book but one thing the book does is breakdown the stereotypes associated with business and Jews and gives a clearer picture of how the Jewish culture by its nature and integrity breathes life into successful business.
It's a good read. The only thing I would have changed is the title. I have nothing against prospering, I just wouldn't have picked it up on my own with the King James feel in the title.