I found the book to be an enjoyable read---for a work of fiction. Young offered some interesting ideas and personifications of the triune God.
I feel that some portions of the story where lifted from C.S. Lewis' "The Great Divorce," but it was different enough not to make too much fuss over.
I know that Young had to make one of the characters unlikeable, but he did such a good job that I never really got attached to him. When he encounters difficult situations, I didn't feel a great deal of sympathy for him.
Overall, it was an enjoyable escape from reality with a few ideas that make the reader contemplate non-traditional concepts, but nothing I would consider groundbreaking or theology shaking.
This book was not quite as incredible as The Shack but similarly gives insight as to the massive variety of ways in which God works in us, uses us to work in others, loves us into his care and pursues us for his Kingdom purposes!
The first review of this book missed the point. If there is no room for God's grace, even at the end, then that thief on the right side of Jesus was lied to. Hummingbird apparently has no room for the infinite grace of God.
In typical fashion, Paul makes us think and think hard about our own life, about the nature of God, and how we respond to God's grace. It is not a sequel to The Shack, but in a powerful way, probes into the dark places all of us have. This book is not for the "casual" reader, but it is for the reader who wants their roots to grow deeper in Christ. I once heard Paul in person in New Orleans, and was greatly impressed with his faith, authenticity, and his personal honesty. I did not see this as his next book, but I should have!
If you don't want to think deeply about your faith, if you have issues with the way God lavishes His Grace, if you don't like the way life sometimes becomes messy, then this book is not for you. But if you are ready for another epiphany, then dive in, wrestle with it, then enjoy the feast of wisdom in this book.