This interdisciplinary volume sheds light on the socio-religious and socio-cultural situation in Europe and discusses the current status of missiology in the European context from the perspective of religious philosophy, religious studies, jurisprudence and Protestant and Catholic theology. Its aim is to contribute to a modern, plural reflective understanding of mission. Mission is not propagated as a covert or open proselytism, but understood as a holistic approach to people in search of a successful life in accordance with the gospel. Mission therefore means clairaudience for the spiritual search of people as well as, if necessary, concrete Caritas or political engagement for the weak and marginalized groups. The scientific discourse is supposed to free the taboo topic "mission" from the narrowing of historical burdens and make it understandable as a socially highly topical phenomenon.