Now available: The Holy Trinity: In Scripture, History, Theology, and Worship, Revised and Expanded by Robert Letham.


Robert Letham’s award winning The Holy Trinity receives a well-considered update in a revised and expanded new edition. Letham examines the doctrine of the Trinity’s biblical foundations and traces its historical development before engaging critical issues. This new edition addresses developments in Augustine studies, teaching on the Trinity and election in Barth studies, East-West relations, and evangelical disputes on the relation of the Son to the Father.


Table of Contents

Foreword by Sinclair B. Ferguson

Preface to the First Edition

Preface to the Revised and Expanded Edition



Part 1: Biblical Foundations

1. Old Testament Background

2. Jesus and the Father

3. The Holy Spirit and Triadic Patterns

Excursus: Ternary Patterns in Paul’s Letter to the Ephesians

Part 2: Historical Development

4. Early Trinitarianism

5. The Arian Controversy

6. Athanasius

7. The Cappadocians

8. The Council of Constantinople (A.D. 381)

9. Augustine

10. East and West: The Filioque Controversy

11. East and West: The Paths Diverge

12. John Calvin (1509–64)

Excursus: A Post-Reformation Development

Part 3: Modern Discussion

13. Karl Barth (1886–1968)

14. Rahner, Moltmann, and Pannenberg

15. Under Eastern Eyes: Bulgakov, Lossky, and Staniloae

16. Thomas F. Torrance (1913–2007)

Part 4: Critical Issues

17. The Trinity and the Incarnation

18. The Trinity, Worship, and Prayer

19. The Trinity, Creation, and Missions

20. The Trinity and Persons



Index of Scripture

Index of Subjects and Names



“Robert Letham’s outstanding book (this substantially updated and expanded version is even better than the first) covers all the bases well, and yet still leaves us in awe of the incomprehensible mystery of our triune God.”

—Joel R. Beeke, President, Puritan Reformed Theological Seminary

“The ancient doctrine of the Trinity has stirred up new discussion since Letham’s acclaimed first edition, but the author has kept up with what has been going on. . . . Letham continues to display more of his learning and more of his characteristic watchfulness when met by the latest Trinitarian neologisms and analogies.”

—Paul Helm, Emeritus Professor of the History and Philosophy of Religion, King’s College, London

“Letham is a master of historical theology. He brings his immense learning to bear on many contemporary Trinitarian issues in an astute and compelling way. Anyone who reads this work will be greatly informed and enriched.”

—George Hunsinger, Hazel Thompson McCord Professor of Systematic Theology, Princeton Theological Seminary

“In this carefully constructed second edition of his important book on the Trinity, Robert Letham forcefully and convincingly demonstrates exactly why the classical doctrine of the Trinity, rightly understood, is indispensable not only for all aspects of theology but for ecumenical agreement today.”

—Paul D. Molnar, Professor of Systematic Theology, St. John’s University, Queens


The Author

Robert Letham (MAR, ThM, Westminster Theological Seminary; PhD, Aberdeen University) is professor of systematic and historical theology at Union School of Theology in Bridgend, Wales, and the author of a number of books, including The Holy Trinity, The Lord’s Supper, and Union with Christ.