Christian plurality is challenging for a religious education teacher in a classroom of students with different orientations of Christianity, not least due to immigration. As Christianity represents an essential component of the majority culture in many European countries, in this study we examine how it is represented in religious education textbooks used in upper secondary schools in Sweden. The purpose is to examine how liberal Christianity is shaped in the textbooks and the possible implications for educating citizens in a plural society. The selection of books is based on those used by religious education teachers in Sweden. The results show a tendency towards a modernised liberal Christianity, the implications of which are discussed in relation to the significance of religions and worldviews in education for social cohesion.