This is our catalog of courses. We will occasionally adjust the course listing to reflect the addition of new courses and the retirement of others. 

Live HS
The Trinity Part One: The Old Testament

Unlock the mysteries of the Trinity’s roots in the Old Testament with this new groundbreaking course. Delve into recent research uncovering the seamless continuity of Jewish thought leading to the Catholic doctrine of the Trinity. Led by Catholic apologist Gary Michuta, this course will be an illuminating journey where ancient texts reveal timeless Truths.

Total classes: 14

Prerequisite: None

Suggested grade level: 9th to 12th grade 

Suggested credit: One full semester of Theology. For a full year credit, follow with Part Two of this course. 

Special notes: This course starts before Labor Day. This is a 2-part course. Students are expected to also sign up for Part Two offered in the Spring semester.


Theological textbooks often say that the doctrine of the Trinity is not found in the Old Testament and that it is a purely New Testament teaching. However, recent cutting-edge research by Jewish and Christian scholars has shown that the Trinity in the New Testament is simply the next step in the development of Jewish thought. In this course, the students will learn how to answer objections from Jewish, Muslim, and anti-Trinitarian perspectives to the Old Testament roots of the Trinity.


Week 1: What do we mean by Trinity?

Week 2: Understanding the Oneness of God

Week 3: God in the Plural – “Royal We” Argument

Week 4: Plurality of Persons in the Old Testament Pt 1

Week 5: Plurality of Persons in the Old Testament Pt 2

Week 6: Seeing Yahweh in the OT Pt 1

Week 7: Seeing Yahweh in the OT Pt 2

Week 8: Seeing Yahweh in the OT Pt 3

Week 9: The Mysterious “Angel” of the Lord Pt 1

Week 10: The Mysterious “Angel” of the Lord Pt 2

Week 11: The Mysterious “Angel” of the Lord Pt 3

Week 12: The Father and Son in the Old Testament

Week 13: The Holy Spirit in the Old Testament

Week 14: The Final Steps to Trinity

Materials and Homework

Materials: A Catholic Bible (print or online) and also Morey, Robert A. The Trinity: Evidence and Issues. Iowa Falls, IA: World Pub., 1996. The textbook is available on loan at archive.com for free. The link is: https://archive.org/details/trinityevidences0000more . If you prefer to purchase the book, see BookFinder.com or https://amzn.to/4anqNOh

Homework: The textbook is advanced, but we will carefully review the material in class so that it is easy to follow. The homework for the course will be reading and auto-graded quizzes for immediate feedback. The quizzes are multiple-choice and open-book.

Important Dates

Class dates: Thursdays, August 29 to December 12, 2024. (No class Oct. 24 for mid-semester break & Nov. 28 for Thanksgiving)

Starting time: 11:30 AM Eastern (10:30 Mountain; 9:30 Pacific; 8:30 Pacific)

Duration: 55 minutes per class

Choose from courses in all subject areas for your upper grade school, middle school, and high school student—taught by worldwide experts in Catholic education.
Other Courses to Explore

Pin It on Pinterest