The Christian doctrine of the Trinity affirms one God in three distinct persons: the Father, the Son, and the Holy Spirit. This concept is both foundational and immensely complex, often leading to diverse interpretations and discussions within the Christian faith. Central to this doctrine is the belief that Jesus Christ shares in the divinity of Yahweh, the God of the Old Testament, and is co-equal with the Father and the Holy Spirit. This article seeks to elucidate the traditional understanding of the Trinity, Jesus' relationship to the Father and the Spirit, and how Jesus is seen as Yahweh in Christian theology, drawing from the rich tapestry of biblical texts and theological insights.