All the large churches in the world agree on this: communion is the highest expression of the church unity. Yet it is exactly the act of communion that historically has given rise to vehement controversies among the churches. This new book not only explores the meaning of holy communion but also marks a turning point on the way to common understanding. Welker gives a clear explanation of holy communion based on the biblical tradition and evaluates the ecumenical discourse on communion of the past thirty years. In the process he answers such often posed questions as "What do we mean when we say that Christ is present in communion?" "How are Christ's body and blood connected with bread and wine?" "What is the difference between the Christian Supper and the Jewish Passover meal?" and "Are children allowed to share in communion?"