Worship is at the heart of the Christian faith. This applies equally to all denominations. For that reason it is all the more important that the ordering of worship and its place in the life of the church is regularly rewritten and reinterpreted. This volume—based on the third, completely revised German edition from 2013 by two of the foremost liturgical scholars in Germany—offers a contemporary, comprehensive introduction to the foundations for the study of liturgy today, one from which scholars and students in the English-speaking world can also profit. Beyond appealing to students of liturgy and theology, this book reaches out to everyone who wants to know more about the liturgical essence and dimensions of the church.