Since at least the time of Plato, religious explanations of the metaphysical foundations of morality have typically fallen into one of two camps: natural law theory, according to which morality is fundamentally explained by facts about human nature—facts that God is responsible for—and divine command theory, which holds that moral obligations arise directly from God’s commands or some other prescriptive act of the divine will. J. Caleb Clanton and Kraig Martin offer an accessible analysis of these traditional views, reconstruct the various arguments for and against them, and offer an extended consideration of the historical emergence of the divide between these positions within the Christian tradition. Nature and Command goes on to develop and defend a theory that combines these two views—a metaethical approach that has not yet received the scholarly attention it deserves. Along the way, the authors make use of underexplored theological resources drawn from the Stone-Campbell movement, a nineteenth-century restoration movement that culminated in one of the largest Protestant groups in America by the dawn of the twentieth century. Nature and Command summons the resources of this particular Christian heritage—its first principles, call for unity, and ecumenism—to solve one of the great dilemmas of moral philosophy and theology dating back to Plato’s Euthyphro. This historically aware, argumentatively rigorous, and highly readable volume will serve as a valuable resource for moral philosophy and ethics, as well as for mining the Stone-Campbell Restoration tradition for historical and theological insights.