Tim Keller wrote this book as a response to the things that he learned in 20 years as a pastor in NYC, engaging with the doubts people had expressed to him.
Out of all the books I’ve read explaining the reasons for believing in Christianity, this is the only one that spends half its time engaging with the arguments against Christianity.
From his experience talking to people with firmly held doubts, he writes in a that answers the doubts sensitively, but thorougly. I’ve found this book to be the best response to something like Dawkins’ “The God Delusion”.
The second half of the book puts forward the positive case for Christianity. This is something that other books have done, sure, but having heard him answering the doubts gives the author that much more credibility in this area.
It’s an easy read, considering the subject matter, and I’d recommend it.
Website for the book (auto-plays a short talking-head video of the author on opening).