The transmission of the Christian faith has become a significant challenge. The authors of this volume explore how children, teenagers, and adults can be introduced to fundamental Christian practices within the context of large-scale pastoral care, and what opportunities exist for deepening faith. In addition to contemporary forms of sacramental and adult catechesis, new catechetical approaches such as biographical and culturally sensitive learning are presented. Ultimately, it also addresses how individuals in a secularized world can acquire religious language skills, learn to pray, and develop diaconal competence. This is a foundational work for theological and catechetical education and training.