133. But the Arians think that they must oppose hereto the fact that He had said, “I live by the Father.” Of a certainty (suppose that they conceive the words as referring to His Godhead) the Son lives by the Father, because He is the Son begotten of the Father,—by the Father, because He is of one Substance with the Father,—by the Father, because He is the Word given forth from the heart of the Father, Ps. xlv. 1. because He came forth from the Father, because He is begotten of the “bowels of the Father,” Ps. cx. 3. because the Father is the Fountain and Root of the Son’s being.