This working paper is concerned with the informal institutionalization of contacts between European institutions and religious organizations launched by Jacques Delors and its aftermath: the formal institutionalization of these contacts started by Jose Manuel Barroso. It was with Jacques Delors that the relationship between religion and the European project gained in importance. As president of the European Commission he recognised the social role of European religions by inviting them to the project “A Soul for Europe”, which aimed to find a more robust source of legitimacy for the European project. Subsequently, I describe the incorporation of Art. 17 in to the Lisbon Treaty obliging dialogue with churches, religious and philosophical org...