I read this for church, which is a little weird to begin with (it's odd to hear sermons connected or organized based on anything other than the Good Book), and I found it so poorly written and edited that I really struggled with finding much of anything that was spiritually valuable. The basic premise is that Christians have gotten so accustomed to living in the day-to-day life of the world that we've lost sight of the larger Kingdom that we have been invited to be a part of. Tripp expresses this repeatedly by saying that we have shrunk "the size of our lives to the size of our lives", which doesn't work for me because it just seems like a nonsensical tautology. It finally occurred to me that the poor writing is, in part, due to the use of a rhetorical preaching style (which at times shifts into an almost colloquial, conversational style), so that the words on the page might actually communicate something meaningful if they were spoken aloud and accompanied by gestures and facial expressions.
