Here Cardinal Kasper summarises the results of the Catholic Church's official dialogues with Lutheran, Reformed, Anglican and Methodist Churches over forty years, sets out a blueprint for 'consensus and convergence', and sets out a map for the way forward for ecumenism. From such a source, this document is therefore of crucial importance. The book focuses on the major issues in ecumenical dialogue - Jesus Christ, The Holy Trinity, Justification, The Church and The Sacraments of Baptism and Eucharist. Cardinal Kasper explains the key issues at stake and offers signposts for the way forward so that the wish of Jesus may be fulfilled: That They May All Be One.