This thesis narrates an ethic of Sabbath-keeping with and for others within a world that directs people to act chiefly for themselves. It engages with Karl Barth's The Doctrine of Creation to narrate the Sabbath as a fidelity-producing practice for the people of God. It demonstrates Sabbath's architectonic importance within The Doctrine of Creation and its generative capacity within the faithful life of the Christian community, thereby recommending Sabbath to the closer attention of Barth scholars, Barth's theologically located account to the closer attention of Sabbath scholars, and Sabbath to the closer attention of the living community of Christ in the world. Structured according to the logic of Barth's account, the thesis begins with "The God Who Rests," which narrates the Sabbath revelation of divine freedom, contentment, and joy as the Creator's movement of fidelity into a covenantal relationship with the creation. "The Creatures with whom God Rests" provides the basic framework within which faithful creaturely existence corresponds to this movement of God's rest. "Sabbath Freedom," "Sabbath Contentment," and "Sabbath Joy" then narrate the correspondence of creatures' action to their Creator's according to these central aspects.