What is the Doctrine of Divine Simplicity
Adherents to this doctrine reason that if God were composed of parts in any sense he would be dependent upon those parts for his very being and thus the parts would be ontologically prior to him.
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Simplicity is the ontologically sufficient condition for God’s absoluteness. The doctrine of divine simplicity teaches that (1) God is identical with his existence and his essence and (2) that each of his attributes is ontologically identical with his existence and with every other one of his attributes.