The Trinity is the heart of the Christian gospel, but Father, Son, and Holy Spirit seldom occupy that position in contemporary discussions of the Christian worldview. This book helps fill the need by unveiling the Trinity at the center of reality. Ralph Smith shows how Trinitarian life shapes covenants, creation, revelation, miracle, kingdom, self, church, and eternity. He compares the Trinity to opposing viewpoints, including secularism and other religions, highlighting the practical implications of Trinitarian and non- Trinitarian views for the individual and society. This book provides basic training for all Christians, especially students, high school and up, who desire to transform the foundations of culture. Ralph Smith (M.Div. Grace Theological Seminary) is pastor of Mitaka Evangelical Church in Tokyo, Japan and serves as director of the Covenant Worldview Institute. See his online articles at berith.org. He and his wife Sylvia have three children, all with Hebrew names. But they live in Tokyo.