Why We Believe What We Believe: The Trinity

This series was originally recorded at Moody Bible Institute. 

Summary

Why doctrine matters is not theoretical; it is deeply practical. What we believe shapes how we live, worship, serve, and remain faithful. We rarely form our theology in a vacuum. It is forged through conflict, culture, and confrontation with error.

In this sermon, Dr. Michael Easley explains why belief demands clarity and conviction. He focuses on the doctrine of the Trinity as foundational, not optional. Scripture reveals one God in three persons: Father, Son, and Holy Spirit. This truth anchors Christian faith across both Old and New Testaments.

Dr. Easley walks through the Shema, the Great Commission, and key apostolic teachings. He shows that Trinitarian belief shapes salvation, fellowship, and access to God. The Father is the source. The Son accomplishes redemption. The Spirit indwells and seals believers.

The Trinity reveals perfect divine community. God invites His people into that same fellowship with Him and one another. Doctrine is not dry or abstract when rightly understood. It leads to worship, unity, and faithful obedience.

We believe Scripture because God has revealed Himself. We trust the Word because God is true. Why you believe what you believe is not merely important. It is crucial.

Takeaways

• We don’t form our doctrine in isolation but in real world trials.
• The Bible reveals one God who exists eternally as Father, Son, and Holy Spirit.
• The Trinity is essential to understanding salvation, redemption, and assurance.
• God’s triune nature models perfect community and calls believers into meaningful fellowship.
• Baptism and discipleship are rooted in Trinitarian identity, not personal preference.
• We believe Scripture because God is true—not because we’ve proven the Bible to be reliable.

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