“We suggest that when churches undergo dramatic changes in what is often called worship style, they may actually be changing their theology as well.  Form and content cannot be separated.  So in congregations where worship has changed, something significant may have happened also to their theology.  Is it possible to preach the whole counsel of God in an up-tempo service?  Can the hard truths of Calvinism be taught in a setting geared toward attracting outsiders?  Can pointing out our sinfulness ever be made appealing?  Churches that depart from older patterns of worship may very well abandon the theological coherence assumed by the Reformed creeds and confessions.  When this coherence is lost, something must replace it.  In our day the solution comes either through evangelistic zeal that makes soul-winning the sole criterion for evaluating the ministry of the church, or through therapeutic forms of positive reinforcement that orient worship more toward self-fulfillment than to self-denial.”

-Darryl Hart and John Muether, With Reverence and Awe