Keller explores what faith is in light of a relationship with Jesus. Is it reasonable? Is it complete all at once? Is faith in Jesus something we can build upon on our own or, like Mary, do we need Jesus to speak our name and open our eyes?
These questions, plus a few more, are discussed with such clarity.
It's difficult to say much more without giving the entire book away. There is a point where someone should purchase the book and read it themselves.
You will not be disappointed with this book or any of the others in this series by Timothy Keller.