Gender and sexuality, marriage and family, are domains of human life that have always been on the agenda of Christian churches and their theological reflections about what it means to live as a human being and as a Christian. This is obviously still the case in present-day Europe, where CPCE churches and theologies are confronted with these topics and called to engage with the form they take in human life and society today. This study is a response to this challenge. In accordance with a mandate by the CPCE 2018 General Assembly and the CPCE Council, its more specific aims are to • provide information about the main scientific theories and concepts, cultural and societal tendencies related to understandings of gender and sexuality in contemporary European culture and society, • explore how these understanding address and are addressed by theological arguments and reflections, • consider the relationship between theological and ethical differences, on one hand, and being in church communion, on the other. This entails both a descriptive and a critical or normative task. First, the study outlines theories from other disciplines along with theological positions regarding gender and sexuality, marriage and family. Second, it brings these theories and positions into critical and normative exchange with central and guiding commitments and principles of Protestant theology. The aim is not to formulate one, distinct position as the justified Protestant line, but rather to identify a range of possible positions in light of these principal Protestant orientations, tentatively labelled a “Protestant corridor”.