The paper provides an overview of the reception of Jürgen Habermas’ political thinking in the field of Christian theology in the last two decades, analyzing the answers that have been given to the challenge of combining faith and reason, religion and individual freedom in democratic societies. Authors of significance here are, among others, Johann Baptist Metz, Francis Schüssler Fiorenza and Edmund Arens. It shall be discussed the democratic potential attributed to faith-based arguments in public discussion and deliberation as well as the religious foundations identified for a liberal tradition of philosophy and political thought. What would the role of faith-based arguments in the public sphere be? How can religious discourses contribute to a cosmopolitan thinking beyond the Kantian horizon? In short, what are the most important conclusions, that is to say, the main results of the dialogue between Habermas and theology in regard of contemporary politics in the last years?