Elucidation of the relationship between ethics, morality, ethics and law. Study of central concepts of the theological tradition in Christian ethics: conscience, natural law, moral and theological virtues, sin and the question of evil. Familiarity with the discipline of theological ethics, its history, methodologies and relevance. Reflection on the formation of the moral subject in the Church and on the stakes of a public relevance of the Christian ethical discourse in a plural society.