The Trinity is often viewed as exclusively a New Testament doctrine, but this overlooks the Hebrew Bible's foundational role in Trinitarian theology. While the New Testament articulates the relationships between Father, Son, and Holy Spirit more explicitly, the Old Testament contains essential elements that informed Christian understanding of God's triune nature. Rather than being absent from Hebrew Scripture, Trinitarian concepts emerge through passages and themes that early theologians recognized as prefiguring the fuller New Testament revelation. The Hebrew Scriptures thus provided crucial theological groundwork for the systematic development of Trinitarian doctrine.