I was hoping for a book that actually describes more of what *happens* in being born again, something a bit more focused on the supernatural miracle of what happens in the soul. This was not that book, and Piper never advertised it as such. However, I still benefited from reading it.
Piper is at pains to define "born again" biblically, apart from the popular definition used in surveys of "born again Christians." He is very focused on the order in which hearing, being born again, and faith must happen, using several passages to show the unity of Scripture on this point. He also focuses much on how one can know whether one is "born again," mainly drawing from 1 John, and because of this, I could almost recommend a large portion of this book as a GREAT commentary on some of the thornier passages in 1 John. (Piper is great at untangling John's meditative, circular style. I am not.)
I will say that the prose, especially in the first half of the book, was almost unreadably clunky for me. In many paragraphs I felt like all he was doing was saying, "Okay, in the last paragraphs we've been establishing this. And our answers to that question were this and this. Now in these next paragraphs we'll be looking at these two questions: this and this. And we will find that the answers to these two questions will be this and this." Essentially, it felt like TOO much transition, as if the transitions got in the WAY of the flow when they were meant to make the flow clearer.
I'm glad I stuck with it, especially for the encouraging and pastoral chapters on evangelism at the end of the book.