No doctrine is so central to Christianity as that of the triune God, and yet it remains among the most misunderstood aspects of the faith. For many, such a daunting topic can seem abstract and disconnected from the human experience of God.

This 12-lecture course answers your most burning questions about the holy mystery of God. With enlightening and incisive insights, Fr. John Randall Sachs, S.J., explores what it means to believe in the Father, the Son, and the Holy Spirit. A professor at Boston College’s School of Theology and Ministry, Fr. Sachs makes the complex concepts he teaches graduate students easy to understand for those without a theology background.

Throughout the lectures, Fr. Sachs interweaves the works of great thinkers like Karl Rahner with profound reflections on the human search for God. In doing so, he helps you see the significance of topics like the Trinity and salvation in theology as well as your spiritual life. As you progress through the course, you will learn about topics like the early Church’s teaching about the Creator, its foundation in scripture, and its relationship to our own faith experience.

At the end of the course, you will emerge with a firm grasp of the Church’s language about God. Fr. Sachs encourages you to contemplate your own experience of God throughout the lectures and long after you’ve finished listening. You will see the glory of God as the human person fully alive.

Course curriculum

  • 1

    Who Is God? Exploring Our Trinitarian Faith

    • Who Is God Study Guide

    • 01 The Human Search for God

    • 02 Covenant and Creation in the Hebrew Scriptures

    • 03 Jesus’ Ministry and the Reign of God

    • 04 Jesus’ Death and Resurrection

    • 05 The Spirit of Pentecost

    • 06 The Church’s Mission in the World

    • 07 The Worship of Jesus and the Divinity of Christ in the New Testament

    • 08 The Beginnings of Trinitarian Theology

    • 09 The Council of Nicea

    • 10 Developments after Nicea: The Foundations of Trinitarian Doctrine

    • 11 The Religions of the World

    • 12 Prayer in Christian Life