The history of post-patristic Western theology displays two fundamental understandings of God: God as immutable Being, God as Becoming Being. Hidden behind them are the principle of analogy and the principle of being. Western philosophers and theologians are not always aware that they have been thinking with these philosophical categories inherited from Plato and Aristotle. We have chosen Anselm, Aquinas, Meister Eckhart, Luther, Locke, and Schelling to exemplify this argument. The Fathers employed Greek philosophy as a tool of discernment, not a vehicle of discovery. They alone have remained faithful to scriptures that explained their conception of God. They not only recognized Him as beyond all being (and therefore, beyond all knowledge and analogy) but with St Paul distinguish between the divine Essence and Its Uncreated Energiesaunknown to the post-patristic Westaa theology belonging to both the Greek and Latin Fathers. The theology of the Fathers is unique.