Matthew Elliott, who wrote an excellent work on the emotions called Faithful Feelings: Rethinking Emotions in the New Testament, has written a more popular level version of the work entitled Feel: The Power of Listening to Your Heart. One thing that most impressed me was how similar a view he had to Edwards. He does a great job of explaining why God can command the emotions, why emotions are not neutral, and why understanding them is an important part of obedience and spiritual growth.