Book excerpt: Reformed Christians, write D. G. Hart and John R. Muether, are increasingly divided over how they ought to worship their God. Considering it an urgent matter to recover a biblical view of worship, the authors have written With Reverence and Awe. Drawing on Scripture and Reformed confessions and catechisms, the authors answer such questions as: When are we to worship? How do we worship with reverence and joy? They also tackle the most divisive issue: music, concluding with criteria that can help Reformed believers make sound judgments.