35. In the exposition of this creed, concise but complete definitions have been employed. For in condemning those who said that the Son sprang from things non-existent, it attributed to Him a source which had no beginning but continues perpetually. And lest this source from which He drew His permanent birth should be understood to be any other substance than that of God, it also declares to be blasphemers those who said that the Son was born of some other substance and not of God. And so since He does not draw His subsistence from nothing, or spring from any other source than God, it cannot be doubted that He was born with those qualities which are God's; since the Only-begotten essence of the Son is generated neither from things which are non-existent nor from any other substance than the birthless and eternal substance of the Father. But the creed also rejects intervals of times or ages: on the assumption that He who does not differ in nature cannot be separable by time.