This volume draws together leading theologians and Christian ethicists from across the globe to critically engage with and reflect upon Gerald McKenny, widely acknowledged as one of the most original and important Christian ethicists working today. The essays highlight the significance of McKenny's interventions with a range of important debates in contemporary theological ethics, ranging from analyses of the Protestant conception of grace to bioethics and medicine. The Ethics of Grace is the first volume to facilitate critical engagements with a number of key themes in McKenny's work, not in the least his interpretation of Karl Barth. Among the contributions, Jennifer Herdt discusses McKenny's Barthian interest in the relationship between nature and grace; Angela Carpenter uses his Barthian understanding of grace and human action as a framework to discuss Jonathan Edwards; Stanley Hauerwas pushes McKenny's theology beyond Barth. Economic, political, and technological themes are also discussed in depth, for instance in Robert Song's chapter on the phenomenology of biotechnological enhancement. Reaching far beyond the work of Gerald McKenny, this multifaceted volume is a high-level resource for students and scholars of theological and philosophical ethics.