Systematic Theologies are not the most exciting reads. Joshua Harris seeks to change that with his book Dug Down Deep: Building Your Life on Truths that Last. This is a systematic theology for the average person. Harris sticks to the essentials: doctrine of God, Christ, the Spirit, Scripture, Salvation, Sanctification and the Church. For the most part he avoids controversial areas, though for some the essentials of the Christian faith can be controversial.
One thing that sets this apart from most (not all) books of this kind is that theology is not seen as abstract. He begins with the notion, similar to John Frame, that truth is to be lived. It is a foundation for our lives, providing stability in the storms of life (as Harris notes from the end of the Sermon on the Mount).
“Theology matters, because if we get it wrong, then our whole life will be wrong.”
Another thing that sets this apart from just about every systematic theology I’ve read is the use of narrative to explain or illustrate the importance of particular doctrines. It is similar to the work his friend Don Miller has done, but not nearly as funny. He even has a few hand-drawn illustrations in his section on sanctification. So this is far more interesting than Berkof or just about any systematic theology.
Joshua does a good job in noting some of the most important tensions in Scripture. He avoids extremes, recognizing the nuances and tensions. For instance, he distinguishes between the already and not yet aspects of our salvation. He covers the tension between the Church’s distinctiveness and presence in greater society. He shares his own history as a charismatic in a helpful and balanced way (even if I don’t completely agree with him). In many ways he displays the humble orthodoxy that he advocates. He’s not flaming anyone here. He’s explaining essential, historic Christian doctrine.
“I began to see orthodoxy as the treasuring of the truths that point to Jesus and his saving work.”
It was interesting to gain more insight into his life and influences. He’s honest about his failings. His humility is evident in leaving home to live with C.J. Mahaney for a few years to learn from him. It is a throw back to the old style of preparation for ministry. He observed C.J.’s life and not just his sermons or curriculum.
He won’t cover everything you want him to cover, but he does a good job with what he does cover. Don’t expect an academic tour de force. He’s not writing to them- he’s writing to ordinary people. If you are one of them, you will probably enjoy this book. It’s for you!
[I received a promotional copy of this book for the purposes of review.]
Cavman Considers 
Can you give an example of a narrative he uses to explain a concept?
He tells the story of his father’s conversion to explain how Christ’s work 2,000 years ago matters today. There are personal stories, and other people’s stories, so it has a very different feel from most systematic theologies.
Thanks for this review!