The Normal Christian Life. Both of these really stand out as the pinnacle of his ministry. This Ephesians study breaks down the books into our seating/ finished work position (ch1-3), being fundamentally first, then our walk (4-5), and finally, God's plan to take us beyong a personal experience, and be used in His eternal purpose of revealing Satan's defeat in warfare. It's a short book, a must read, and a classic. Very inspiring.