"The heart of this book is about the ways in which the liturgy of the sacraments has been celebrated and understood in history and the ways in which the liturgy can (and should) influence how we understand the sacraments today." In the first text of its kind, renowned liturgical scholar Kevin W. Irwin offers a thorough explanation of the sacraments in their intimate relationship to liturgy. In Part 1 he traces the historical evolution of sacraments and sacramental practice from their biblical foundations through the liturgical reforms of the Second Vatican Council. Part 3 concerns a theology of sacraments based on the liturgy as a major and firm foundation for understanding the theology of the sacraments today. Bridging these two main parts are two methodological chapters that describe the sources and method to be applied in Part 3. The Sacraments and Their Liturgical Foundation is an indispensable resource for scholars and students who need to understand the sacraments as they should be understood: in their historical and theological relationships to the liturgy.