"highlight important lives from all ages and areas of the Church." One purpose is to show how the faith of those being written about impacted their lives.
Having long been a fan of The Hobbit and The Lord of the Rings (I even read The Silmarillion), I was pretty excited to read this biography of Tolkien. I found it to be an extremely interesting read and I learned a good number of things about Tolkien that I didn't before. It was particularly interesting to read of the club that Tolkien started while in high school that carried over to college and led to his friendship with C.S. Lewis.
The one thing that disappointed me a little was that there really wasn't a great deal of information about how Tolkien's faith really impacted his life outside of the circumstances of his marriage. There seemed to be more in this book about how the faith of those around him impacted his life than his own faith.
Overall, I really enjoyed reading this book and would recommend it to others with one caveat. It really is more of a condensed biography of Tolkien than a story of how his faith impacted his life and writing.