The Joy of Freedom: Eastern Worship and Modern Man. London: Lutterworth Press/Richmond, Virginia: John Knox Press, 1967; Madras: CLS, 1986.

  • The Gospel of the Kingdom. Madras: CLS, 1968.
  • Date of Easter and Calendar Revision of the Orthodox Churches: A Preliminary Study, Addis Ababa: The Standing committee of the Conference of Oriental Orthodox Churches, 1968.
  • The faith of Our Fathers. Kottayam: MGOCSM, 1969/Kottayam: Bethel Publications. 1996.
  • The Freedom of Man. Philadelphia: Westminster, 1972.
  • Be Still and know. Madras: CLS/Delhi: ISPCK/Lucknow: The Lucknow Publishing House, 1974.
  • Freedom and Authority. Madras: CLS/Delhi: ISPCK/ Lucknow: The Lucknow Publishing House, 1974.
  • Quest for Certainty: Philosophical Trends in the West: A Sample Survey of Later Twentieth Century Western Thought for the Average Indian Reader. Kottayam: Orthodox Seminary, 1976.
  • The Human Presence: An Orthodox View of Nature. Geneva: WCC, 1978/Madras CLS, 1980/NewYork: Amity, 1987/ NewYork: Element Books, 1992.
  • Truth Without Tradition?. Tirupati: Sri Venkateswara University, 1978.
  • Science for Sane Societies: Reflections of Faith, Science and the Future in the Indian Context. Madras: CLS, 1980/ NewYork: Paragon, 1987.
  • Cosmic Man. The Divine Presence: An Analysis of the Place and Role of the Human Race in the Cosmos, in relation to God and the Historical World, in the thought of St. Gregory of Nyssa (ca 330 to ca 395 A.D.). NewDelhi/Kottayam: Sophia Publications, 1982.
  • The Indian Orthodox Church: An Overview. NewDelhi / Kottayam: Sophia Publications, 1982.
  • The Meaning and Nature of Diakonia. Geneva: WCC, 1988.
  • Enlightenment East and West: Pointers in the Quest for India's Secular Identity. Shimla: Indian Institute of Advanced Study/NewDelhi: B. R. Publishing Corporation, 1989.
  • A Light Too Bright. Albany, New York: State University of NewYork Press, 1992.
  • A Human God. Kottayam: MGF, 1992.
  • Healing: A Holistic Approach. Kottayam: Current Books/ MGF, 1995.
  • Love's Freedom The Grand Mystery: A Spiritual Auto-Biography; All Uniting Love with Creative Freedom in the Spirit, As the Grand Mystery at the Heart of Reality - One Man's Vision. Kottayam: MGF, 1997.
  • The Secular Ideology: An Impotent Remedy for India's Communal Problem. Kottaym: MGF/NewDelhi: ISPCK, 1998.
  • Global Peace and Common Security. Kottayam: MGF / NewDelhi: ISPCK, 1998.
  • Disarmament and Nuclear Weapons. Kottayam: MGF / NewDelhi: ISPCK, 1998.
  • Introducing The Orthodox Churches. Kottayam: MGF / NewDelhi: ISPCK, 1999.
  • Religion and Dialogue. Kottayam: MGF / NewDelhi: ISPCK, 2000.
  • The Church and Authority. Kottayam: MGF / NewDelhi: ISPCK, 2001.
  • Worship in a Secular Age. Kottayam: MGF / Thiruvalla: CSS, 2003.