Let me start out with the positives. This book is not hard to understand but is simply written. It is also not very long and generally progresses sequentially through Romans. Every once in a while Wommack comes out with a real gem of an analogy or a well-written truth. I appreciated those things.
However, the negatives far outweigh the positives. I would probably give it a one-star rating were it not that this book is probably helpful for many people. It is written mainly to those who have a wrong understanding of the gospel and who do not embrace the radical grace of God after salvation. The core of Wommack's teaching on grace is accurate and helpful. I believe it is a message most Christians need to hear. Personally, I grasp this doctrine already--at least to the level at which Wommack describes it, and therein lies my dissatisfaction. The main problem I have with Wommack's book is that it is largely written at the level of a high school sophomore. I simply found the depth of his mastery of logic, language, and theology to be woefully insufficient. He repeats himself unnecessarily throughout. His vocabulary is bland and very limited. The substance of his message on grace is far too basic to fill a 200-page book.
Particularly problematic is his ignorance (or ignoring?) of logic. Early in the text, he give what I think is an attempt at an argument which will underpin part of what he says throughout the book (if it's not an argument, then he never offers an argument). The structure of his argument is a simple fallacy, though! He argues that since if A, then B, and if A, then C, that therefore if B, then C. That is, since the Greek word "sozo" is used for salvation from sin and also salvation from sickness, Wommack asserts that anyone who is saved from sin is also saved from sickness. From there, he simply leaps to salvation from a lack of financial prosperity. Never again does he try to support his numerous statements throughout the rest of the book that a proper understanding of grace frees one from condemnation and sin AND from sickness and a lack of fiscal prosperity. I'm not saying there are no compelling arguments for that doctrine. I'm saying Wommack certainly doesn't provide one. While this three-fold teaching is not the thrust of his book, he certainly brings it up enough to merit more than a logical fallacy in support of it.
In a couple other places he creates false dichotomies or glaringly misrepresents someone else's view. While there are plenty of pages of good, accurate writing and doctrine, these errors in logic and rhetoric cannot be excused, and they destroy the foundation for part of his message.
Never having heard of Andrew Wommack, I was given this book by a relative and approached it with the expectation of getting solid charismatic teaching about grace and the work of Christ. After spending 200 pages with Wommack, I had the feeling that he was part of the Word of Faith denomination (though I don't think they call themselves a formal denomination). On-line sources supported my intuition. Unfortunately, these low standards in logic, language, and sadly theology, have become characteristic of leading figures within this denomination. That doesn't negate everything they teach, but it doesn't lend credence to it. Those of us who want solid argument, intellectually stimulating writing, and theology grounded in Scripture will want to look elsewhere.