The purpose of this book is to formulate a way of thinking about issues of power, moral identity, and ethical norms by developing a theory of responsibility from a specifically theological viewpoint; the author thereby makes clear the significance for Christian commitment of current reflection on moral responsibility. The concept of responsibility is relatively new in ethics, but the drastic extension of human power through various technological developments has lately thrown into question the way human beings conceive of themselves as morally accountable agents. It is this radical extension of power in our time which poses the need for a new paradigm of responsibility in ethics. Schweiker engages in an informed way with what is therefore a highly topical discussion. By developing a coherent theory of responsibility, and inquiring as to its source, the author demonstrates the unique contribution of Christian faith to ethics in our time.