The One and Triune God

There are few doctrines more central to the Christian faith than the Trinity. Affirmations of belief in the Father, Son, and Holy Spirit are at the heart of the Church’s creed. And yet there are also few doctrines of the Church less understood and appreciated than that of the Trinity. This course helps to explain some of the basic doctrines of the Church concerning the unity among and diversity between the Father, Son, and Holy Spirit.

The course includes: 

  • 12 25-minute lectures
  • 12 written lessons, which expand on the video lectures
  • Extra reading and writing assignments (optional)
  • Unlimited access to the course

The One Triune God was recorded in 2000 as part of the International Catholic University Classics Collection. TCT Courses proudly has received the rights to offer this timeless course by Fr. Kenneth Baker, S.J. to a wider audience.

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Rev. Kenneth Baker, S.J.


Rev. Kenneth Baker, S.J., is editor emeritus of the Homiletic & Pastoral Review, having served as editor from 1971 to 2010.  He graduated from Gonzaga University, studied Theology at the University of Innsbruck, Austria, and translated Karl Rahner’s Primacy and Episcopate into English.  After teaching for two years at Gonzaga University, he published his translation of Rahner’s Spiritual Exercises and received his Ph.D. from Marquette University.  Returning to Gonzaga he became head of the Department of Theology in 1968, leading it faithfully through the turmoil surrounding Humanae Vitae.  He then served as president of Seattle University.  Fr. Baker has built and run three community television stations and was president of Catholic Views Broadcasting, Inc., which produced a weekly 15-minute radio program airing on 50 stations across the U.S.  He is the author of a three-volume explanation of the Faith called Fundamentals of Catholicism.