Introduction

This sermon introduces a new Sunday school series focused on the biblical theology of the Trinity, emphasizing its foundational role in Christian faith. The speaker distinguishes between three methods of theological study: systematic, which organizes doctrine logically; biblical, which traces themes chronologically through Scripture; and historical, which examines how doctrines developed over time. Key Trinitarian concepts such as monotheism, divine essence, and the eternal relations of the Father, Son, and Holy Spirit are defined to clarify orthodox belief against heresies like tritheism and modalism. The preacher argues that while systematic theology is a valuable tool, it must be grounded in biblical exposition to avoid logical extremes. The session concludes by affirming that the full understanding of God’s nature is revealed progressively through Scripture, culminating in the New Testament revelation of Jesus Christ.