We tried to make the best video on the internet explaining the Trinity
ChristianStory
teaching
April 20, 2026
Why did people’s encounter with Jesus eventually end up with Christians believing that God is Trinity? In this video, we trace the first 400 years of Christians wrestling with one of the most important ideas of Christian theology. We explore the early heresies like Modalism and Subordinationism and trace the golden strand of Trinitarian thinking through the Bible and history. Why do Christians believe that God is a tri-unity? Three Persons in one. What even is the Trinity and how does it work? And why do Christians believe it is the most beautiful way to describe God?
No Generative AI is used in any part of the production process.
This video took 800 hours to make! Help fund our next video or join us on our journey to bring the History and Theology of Christianity to life. Become a partner: https://christianstory.com/give/
📖 To go deeper into the video, download our free deep-dive dossier written by our researcher. It's completely free, no catch. Just good nerdy content. But please do consider a voluntary donation: https://christianstory.com/dossiers/Trinity
🔔 Subscribe for future episodes tracing 2,000 years of Christian History and Theology
📺 Full series playlist: https://www.youtube.com/playlist?list=PLhpw2MeJIYceShUgiOzUV_AbPuKXCedg5
00:00-01:30 Intro
01:31-03:22 The first time “Trinity” is ever used
03:23-04:46 Modalism and why it’s a problem
04:47-06:16 How can Jesus be Son of God, and God?
06:16-06:47 What about the Spirit?
06:48-08:14 Tertullian’s pictures
08:15-10:00 Subordinationism and why it’s a problem
10:01-12:52 Why the Father didn’t exist before the Son
12:53-14:51 Why does this even matter?
14:52-15:26 Outro
Topics
history of the churchhistoryexplainerexplainedsummarisedanimationchurch historyjesus christcatholicroman catholic








![The First 150 Years of Christianity in the Roman World [AD 50 - 200]](https://i.ytimg.com/vi/oM8Gcn1gbRw/hqdefault.jpg)









