The author would take his readers on a ride from the Self-Revelation of the I-AM that the Lord God is with Moses, through King David, to the I-AM of the Messiah of Israel and of the Incarnation, and to the I-AM of the Dogma of the Church as the People of God. It is argued that the Grace and Truth of the Lord God cannot rightly be grasped in all of their depth in the world without becoming able to integrate both the continuity and the discontinuities of this Revelation with us, even in our own times.