John D. Zizioulas is Metropolitan of Pergamon of the Ecumenical Patriarchate of Constantinople. The author of Being as Communion, Zizioulas is internationally known for his writings and lectures on ecclesiology and personhood.

Eucharist, Bishop, CHurch is a historical and theological study that explores the origins and development of the students of the Church.

The author considers the ministry of the bishop as it is embodied in the celebration of the Eucharist as constituting and insuring the unity of the Church.

This assertion forms the core concept of "eucharistic ecclesiology." Eucharist, Bishop, Church illuminates the history and theology of the Church's ministerial structures and in particular how the unity of the Church is served by the ministry of the bishop and revealed in the celebration of the Eucharist.

The insights of this book significantly contribute to the ecumenical quest for the unity of the Church and places all the ministries of the Church in their proper ecclesiological perspective. Originally written as the author's doctoral dissertation in 1965 for the University of Athens, the text has been widely acclaimed as a classic study in ecclesiology.