The article deals with the relationship between theological ethics and moral philosophy. The former is seen as a theoretical reflection on Christian ethics, the latter as one on secular ethics. The main questions asked are: (1) Is there one and only one pre-theoretical knowledge about acting rightly? (2) Does philosophy provide us with the theoretical framework for understanding both Christian and secular ethics? Both questions are answered in the negative. In the course of argument, four positions are presented: theological ‘unificationism’, philosophical ‘unificationism’, theological ‘separationism’ and Lutheran ‘dualism’. It is argued that the latter position is most convincing. It is dual in the sense of being both a theory of Christian ethics and of including a recognition of natural law. Hence, it unites a particularistic and a universalistic point of view. In the last section a reformulation of the Lutheran position is attempted in making use of the ethical theory of Knud E. Løgstrup's The Ethical Demand.
Christian ethics secular ethics Lutheran ethics natural law particularism universalism ethics of interdependence