Rich and significant, Warrant, Nature and Duties of the Office of the Ruling Elder In the Presbyterian Church is a historic reminder of Presbyterian polity. Replacing church governance by hierarchies of single bishops, Calvin developed this theory of government, which was strongly associated with French, Dutch, Swiss and Scottish Reformation movements, besides the Reformed and Presbyterian churches. Miller clearly shows the importance of this book as a theological document. A great resource as a compendium to the Book of Order!