So theology is important. In your book you mention that one of the problems you see in our culture is the concept of relativism. The fact is, however, that no one is truley a relativist unless they are totally irrational. Relativism stops when you drive your car to an intersection and see a truck coming down the road. All of the sudden you get objective in your approach to reality.
People are selective relativist.
And what they mean by that is that just as a child has no maturity of understanding, so the Christian is not supposed to seek a mature understanding of the content of his or her faith. In regard to evil be infants, but in your thinking be adults. That is, we are not supposed to be sophisticated in our criminality, but we are called specifically to be mature in our understanding. The theologians of America have become the Robert Tiltons and the Kenneth Copelands and people like that. Yet people look to these folks as their teachers of doctrine and theology.