"Dealing with the unfamiliar" plays an even stronger role in the social context today than it did in history. The global horizon of our everyday perception presents the challenge of constantly rethinking the relationship between I, you and others. In school lessons, dealing with the unfamiliar is a very personal challenge, as it happens in adolescence all about the formation of a social self-mediated by learning processes. The Federal Republic is a migration or post-migration society. Students experience this fact in their everyday life. In addition, the digital world breaks through the supposedly safe boundaries between near and far, here and there, familiar and unfamiliar. The ability to practice "dealing with the unfamiliar" yourself can be an important building block for a respectful coexistence in an increasingly complex world. The booklet is divided into four thematic complexes: Biblical pictures on dealing with strangers and strangeness; Social theories on dealing with strangers and strangers; Die there - the near foreign, the foreign closeness; We - conceptions of the encounter. The main idea of the present series consists in the thesis that young people can learn to think politically with religion and ethics. Thus, the use of the materials is not limited to religion, values or ethics lessons.