Doctrine of the Trinity

The Trinity is one of the most mysterious and sacred truths of the Christian faith. Yet there exists much confusion and controversy about it, even among Christians. Join Dr. R.C. Sproul as he helps shed light on the mystery of the Trinity.

  • Worldwide Class

    Take this course with Ligonier Connect students from around the world. In the Worldwide Class, you'll be able to:

    • Take the course at your own pace
    • Discuss questions and share notes with your classmates
    • Keep unlimited access to the course content with an active Ligonier Connect subscription
  • Create your own group class

    Take this course with your own private group of friends, family, or church members. With a group class, you'll be able to:

    • Take the class together on a schedule or allow members to work at their own pace
    • Invite anyone to join your class (requires a Ligonier Connect subscription)
    • Moderate discussion questions and leave feedback for each member of your class
    • Monitor each member's progress at a glance

About this course

In this course, Dr. R.C. Sproul carefully explains the doctrine of the Trinity by presenting the testimony of Scripture, outlining the chief errors which have afflicted the church, and demonstrating that while this sacred truth of Scripture is quite mysterious and difficult to understand, it is not contradictory. Rather, it is a beautiful expression of the biblical teaching about the nature of the one true God.

This course has been approved by the Association of Christian Schools International for one Continuing Education Unit.

Course Path Overview

  • Getting Started

    • Welcome to Doctrine of the Trinity

      • to-do Review Course Material
      • to-do Update Your Student Profile
      • to-do Introduce Yourself
  • Monotheism

    • Lesson 1: Monotheism

      • read Bible Reading
      • watch Monotheism
      • to-do Discussion Questions
      • Take Lesson 1 Self-Assessment
      • to-do Thinking in Depth
  • The Biblical Witness

    • Lesson 2: The Biblical Witness

      • read Bible Reading
      • watch The Biblical Witness
      • to-do Discussion Questions
      • Take Lesson 2 Self-Assessment
      • to-do Thinking in Depth
  • Early Controversies

    • Lesson 3: Early Controversies

      • read The Niceno-Constantinopolitan Creed
      • read Bible Reading
      • watch Early Controversies
      • to-do Discussion Questions
      • Take Lesson 3 Self-Assessment
      • to-do Thinking in Depth
  • Fifth-Century Heresies

    • Lesson 4: Fifth-Century Heresies

      • read Definition of Chalcedon
      • read Bible Reading
      • watch Fifth-Century Heresies
      • to-do Discussion Questions
      • Take Lesson 4 Self-Assessment
      • to-do Thinking in Depth
  • Contradiction vs. Mystery

    • Lesson 5: Contradiction vs. Mystery

      • read Bible Reading
      • watch Contradiction vs. Mystery
      • to-do Discussion Questions
      • Take Lesson 5 Self-Assessment
      • to-do Thinking in Depth
  • One in Essence, Three in Person

    • Lesson 6: One in Essence, Three in Person

      • read Bible Reading
      • watch One in Essence, Three in Person
      • to-do Discussion Questions
      • Take Lesson 6 Self-Assessment
      • to-do Thinking in Depth