The Life of God in the Soul of Man
Henry Scougal
This is really a magnificent piece: One of the most influential pieces of writing on the Evangelical side of modern religion. Many of the great modern Evangelicals point back to this book as a landmark in their lives. Read it if you want to really understand the heart of Evangelicalism as a historical movement. Many editions available.
DWillard.org is co-sponsored by the family of Dallas Willard, Dallas Willard Ministries, and FiveStone.