On 30 June 2017, the German Bundestag voted in favor of the introduction of marriage for same-sex couples—a historic moment. Only a few days earlier, the then Federal Chancellor Angela Merkel had released the vote as a decision of conscience and thus dissolved the usual underlying factional compulsion—does this mean that rights for homosexual people are a question of personal conscience and values? Such a localization arouses the interest of religious studies to investigate how the discourse actors from the fields of politics, church and society formulate the decision of conscience as a discursive strategy in the negotiation process of same-sex marriage in Germany argumentatively and which positionings as well as descriptions of others and themselves are derived from this. The starting point is a modernity in which the actors move, understand and articulate themselves. This understanding of modernity is based on the process of a vertical transfer (Gladigow) of sociological theories of religion, among others, whereby narratives of secularization, overcoming religion (as a necessary precondition of modernity) and narratives of an opposition of religious vs. secular or religious vs. homosexual reappear as positions and arguments in the discourse. Using the approach of discursive religious studies (von Stuckrad) in conjunction with sociological discourse analysis (Keller), these processes of positioning, demarcation and negotiation based on the premises of modernity will be analyzed for the period from 2013 to 2017 on the basis of the public debate on religious, political, and social actors in Germany.