The Rev. Walter L. Taylor, D.Min., reviews the life and work of Old, the preeminent scholar of Reformed worship in his generation. Old endeavored to show the distinctiveness of an approach to Scripture that is “Reformed according to Scripture.” The key point, as Taylor explains, was how Reformed leaders dealt with liturgical practices that were neither commanded nor forbidden by Scripture. They followed neither the Anabaptists in prohibiting everything that was not explicitly commanded, nor the Lutherans in allowed everything that was not forbidden. The Reformed approach required a more sophisticated study of the Bible than simply searching for proof texts.