Throughout my priestly service, I have carried in my heart a deep desire to help believers return to the biblical understanding of the one true and living God-not as conceived by human speculation, but as revealed by God Himself in the Holy Scriptures, fulfilled in the Lord Jesus Christ, and made known by the Holy Spirit.

The Church confesses one God. This is the faith of the prophets, the apostles, and the Fathers who proclaimed the same God of Israel-Yahweh, the self-existent I AM-as the God and Father of our Lord Jesus Christ. From age to age, this unchanging confession has been the foundation of true worship: that the Creator of heaven and earth is one in essence, revealed as Father, through His Word, and by His Spirit.

Throughout history, the mystery of the divine being has been expressed by the theological terms Trinity and one essence in three hypostases. The early Fathers of the Church employed these terms not to invent new ideas but to defend the apostolic faith against false teaching. Yet, over time, these expressions have sometimes been misunderstood-leading some to imagine three gods (tritheism), and others to think of the one God as merely appearing in three forms (modalism). Both errors obscure the living revelation of the one God who is Father, Word, and Spirit.

This book, titled The Oneness of God: A Biblical Perspective, seeks to present the same ancient and apostolic faith in the clear and living language of Scripture rather than in the speculative terminology of philosophy. It does not attempt to define God's inner essence-which remains beyond all human comprehension-but to contemplate His self-revelation: the one living God who creates, redeems, and sanctifies; who acts, speaks, and gives life.

The God whom Israel worshiped as Yahweh has revealed Himself in the fullness of time as the Father, through His eternal Word (