Higher life theology--also known as Keswick theology--offers a quick fix for this struggle. It teaches that there are two categories of Christians: those who are merely saved, and those who have really surrendered to Christ. Those who have Jesus as their Savior alone, and those who have him as their Master as well. If Christians can simply "let go and let God" they can be free of struggling with sin and brought to that higher level of spiritual life. What could be wrong with that?

A lot, it turns out. In No Quick Fix, a shorter and more accessible version of his book Let Go and Let God?, Naselli critiques higher life theology from a biblical perspective. He shows that it leads not to freedom, but to frustration, because it promises something it has no power to deliver. Along the way, he tells the story of where higher life theology came from, describes its characteristics, and compares it to what the Bible really says about how we overcome sin and become more like Christ.