Kommission für Glauben und Kirchenverfassung
The New Delhi World Assembly of World Council of Churches in 1961 voted Samuel as a member of the Council's Faith and Order Commission. He held that position until 1984. The fourth general assembly of the WCC, at Uppsala in 1968, elected him as a member of the Commission's Working Committee and later in its steering committee. His active participation in the meetings of Faith and Order Commission was very significant and giving expressions for the importance of church unity. His paper in the Faith and Order meeting at Accra 1974 on the subject "How can the Unity of the Church be Achieved" he points to the influence of "different intellectual and cultural backgrounds" in the evolution the different church traditions, awareness of which should help relativise these traditions. He was a participant of seven meetings of the Commission.