No serious student of the ecumenical movement can afford to miss this challenging and evaluation of the history of the ecumenical discussion of evangelism and of the ideas that sprang from it. The author is head of the department of evangelism of the World Council of Churches, and emphasizes the concept of evangelism as the Church going forward to meet the Lord. Evangelism is the proclamation of the gospel in of the end of the world in the rule of God. This is a far cry from the concept of evangelism as practiced by many churches, including especially American Churches, as an effort to reproduce and propagate themselves. As the churches have become identified with the they have become isolated from the masses of proletariat society, whose ways and language they no longer understand. This book, by reviewing the struggle of the to agree on an evangelism that is both true to scripture and adequate for times is both disturbing and stimulating. It gives a truly Catholic dimension to the Church which is called to participate in the Messianic work of Jesus Christ, gathering men throughout the whole world for his congregation.