If you've heard of the famous book, The Marrow of Modern Divinity, written by the Puritan Edward Fisher, and of the controversy that ensued from it (aptly called "The Marrow Controversy") but have no real foundational information on the subject, then you would benefit from this primer, written by Joseph H. Hall, entitled, The Marrow Controversy: A Defense of Grace and the Free Offer of the Gospel.
I personally have the "Marrow" book but have yet to finish reading it. Spending your money on this book is definitely an instance of money well spent (even more so if you order through the link provided below...hehehe), for you will surely grow in your knowledge, appreciation and application of the Gospel.
