Baxter explores the topic of holiness, answering questions such Does the Bible teach a deeper, further work of the Holy Spirit in the believer? Is there a complete freedom from sin?
The best word I can find for this book is "confused." Baxter lurches seemingly from appearing to argue vigorously for one side of a particular holiness argument (gradual vs. instantaneous, perfectionism vs not, etc.) to the other, and then by sleight of hand (ala redefining the two nature theory or sin/sins in Romans) to tell us he really believes both. See why I said confused? In the process, he does deal with a fair amount of Scripture, but in my opinion leans entirely too much on quotes of historical personages experiences.
The book is not a total loss. He is a warm writer, and a good one. He earnestly desires to help us on to holiness. Ultimately, he just sends us in the wrong direction for he sends us after an experience.
I've heard much of Baxter and expected much of this book. I was very disappointed.