The criterion of being a Christian lies in the determination of the relationship between God's actions and human actions. From this starting point, the Bonn dogmatician explains the concepts of grace and salvation in a framework of the inner-Christian debates regarding the relationship between God and humanity, as well as in the context of the Christian-Jewish dialogue. Ultimately, this book addresses the question of what it means to be a Christian. Therefore, Karl-Heinz Menke not only provides a rationally justifiable explanation of the concept of grace but also elucidates what is meant by grace and salvation using pedagogically proven images and examples that can also be used in catechesis and religious education.