I really, really enjoyed this book - it was a quick read (I think I read it in 2 nights) and the writing style is easy to follow. The story of Count Zinzendorf and the Moravians at Herrnhut was compelling, and I loved how the author traced this movement throughout church history in an easy-to-understand way. What shines forth is the idea that relationship with the person of Jesus creates a life that is full of the fruit of the Spirit. These were communities marked by love, sacrifice, and care. I already thought of people to lend this book to!
A caveat: I completely skipped the modern journal entries that are at the end of every chapter. The story of the Moravians is compelling - the story of how scary it is to fly in bad weather was less so. I glanced at a few of the diary entries as I'd pass them, and didn't feel like I was missing anything. If you like them, read them, but if you don't like them, feel free to skip them.