Modern, American, Protestant Christians have tended to, for most of my lifetime at least, gaze upon the idea of "spiritual disciplines" with suspicion, many times believing them to be monastic or mystic or Eastern in nature. But Dr. Whitney's book effectively provides great insight into the Biblical foundations of the disciplines. In fact, the disciplines espoused herein are Biblically based and taught, modeled, and reinforced through the teachings in Scripture. Each chapter deals with a different discipline, the first two chapters being the exception. The disciplines are expounded upon by the author with one oft repeated purpose, "for the purpose of Godliness." Whitney's theology is conservative, but no hint of denominational dogma or creedalism comes out in the book, it is simply a Biblically based work.
The book also offers ample examples from outside the Bible as well. Examples of how others effectively incoporated the disciplines into their lives. I highly recommend it.