Module 8: Trinitarian & Christological Controversies
Hi everyone, and welcome to the eighth module of the History of Christianity 1 Course. In this section, we'll be looking at a series of theological controversies from the fourth and fifth centuries. We'll look at the reasons behind these controversies and the heresies that caused them, as well as the how they were resolved and the ongoing impacts.
This module will help you to understand the history and theology behind the early ecumenical councils and what they accomplished. You will be exposed to some of the heretical ideas that diverged from the truth, how they were introduced and how they spread. And you will learn how the church resisted, and eventually overcame these incorrect views, and how these controversies eventually strengthened the church's theology and clarified the orthodox confessions. You will also wrestle through what caused some of the incorrect views and how we can protect against modern heretical ideas, as well as clarifying your own understanding of the orthodox doctrines and why they matter. And the student will be given opportunity to process how these lessons can be applied to current social situations, by learning from history's successes, as well as the failures.
Introductory Scenario
Imagine that one (or more) of the teachers in your church begins to teach things that are not true and go against what the Bible teaches. How should you respond? How should the elders/leaders of the church respond? Should denominational or wider church leadership become involved? If so, how? Please consider these questions and be watching for material that will help you answer them as you work through this module.
Module Objectives and Outcomes
Upon successful completion of this module, the student will:
- Articulate the nature of heresy and why it is important to combat it.
- Describe the history of Arianism and the Trinitarian controversies and councils that resulted.
- Articulate the doctrine of the Trinity that resulted from these controversies, the theological language used, and why this doctrine is important for Christian life today.
- Describe the reasons why Arianism grew in influence even after condemned at councils, and what lessons that can teach us about dealing with false teaching.
- Articulate the contribution of Athanasius and how he eventually won the church back to orthodoxy.
- Describe the various Christological controversies, including how the various heresies went wrong, as well as the orthodox teaching, and why this doctrine is important for Christian life today.
- Evaluate the reasons behind the heresies and how the church can protect itself from similar theological problems.
- Place the major people and events from these controversies in a general chronology.
Instruction Guides
In this section, you'll find links to important instructional documents for this module. Click the following links to open each document. There is a set of instructions for individual study and a document for group study.
Textbook Content
In this section, you'll find a study guide for the textbook reading for module 8. And then you'll find the link to a practice quiz covering this textbook reading.
This section also contains a review quiz to test your understanding of the textbook material for this module. By clicking the thumbnail below, you will be given a series of questions, in random order. The quiz will be different each time, so feel free to take it more than once.
Click the Thumbnail to begin the Quiz

Click the button next to the best answer for each question, or drag each term to its best definition. Then press the Submit
button at the bottom to see if your answers are correct.
Lecture Content
In this section, you will find the video lecture for the Trinitarian & Christological controversies module. Click the thumbnail to open access to the video. There are also links with the video if you prefer to watch on the Rumble or YouTube interface or download just the audio to listen offline.
Click the Thumbnail to view this Lecture Video
