ABSTRACT
One of the most significant theological developments of the twentieth century is the Ecumenical Movement. The concern for the unity of the Church called for theological study to uncover the grounds for unity and disunity. It especially focuses attention upon the doctrine of the Church. One of the more important developments has been the recovery of some measure of catholicity in theological conversation and labor. Some of us, pioneers in this undertaking, have grown old in our search for unity. The World Council of Churches, meeting at Amsterdam, sends this message of greeting to all who are in Christ, and to all who are willing to hear. The love of the Father and the Son in the unity of the Holy Spirit is the source and goal of the unity which the triune God wills for all men and creation.
