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Shiavault - a Vault of Shia Islamic Books Western Concepts of God Unity ======== Monotheism maintains that there is one God. To this Christianity adds that there is a threefold distinction within one God. Stated roughly, God is one substance in three persons. Aquinas argued that there cannot be two gods because neither would be absolutely perfect since one would have a quality that the other lacked (Summa Theologica Ia, 11, 3).
Richard Swinburne says that theism is a simpler hypothesis than polytheism, the latter positing more beings with various capabilities and relations. Theism is therefore more likely since simpler hypotheses turn out to be true more often. Moreover, the universe exhibits a unity, in its universal natural laws for example. This unity argues for one deity as its originator (The Existence of God, 1991, pp. 141-2). 4.
Eternity Biblical authors spoke of God remembering the past, knowing the future, and acting in the present. According to early Christian thought, God exists forever, without beginning or end. For him events are past, present, and future. Later Christian thought, under the influence of Platonism it is said, held that God exists not inside time, but outside it. God is atemporal in that for him everything is simultaneous, there being no past, present, or future.
This later view was held by Augustine, Anselm, and Aquinas; and classically expressed by Boethius, "Eternity is the complete and total possession of unending life all at once" (Consolation of Philosophy, V, vi). Boethius regarded a timeless being as superior because it does not lack a past and future; its entire existence is in a timeless present. In modern times the timeless view has been defended by E. L. Mascall, Norman Kretzmann, Eleanor Stump, Paul Helm, and Brian Leftow.
Arguments in favor include: it makes God more transcendent, it simplifies foreknowledge, it proposes the same divine relationship to time as to space--God is outside it; furthermore it allows for the creation of time along with matter.
Arguments for the earlier view, that God is eternal but exists within time, include: personhood requires existence in time because only in time can there be intending, acting, knowing, remembering, and the like; it is difficult to explain how a timeless God can know or respond to events; and the notion of timeless eternity is incoherent. 5.