On the Holy Trinity

²⁶ But why do we delay any longer to stop their mouths by another most clear and most weighty proof, where not an angel in the singular nor men in the plural are spoken of, but simply angels; by whom not any particular word was wrought, but the Law itself is most distinctly declared to be given; which certainly none of the faithful doubts that God gave to Moses for the control of the children of Israel, or yet, that it was given by angels. So Stephen speaks: “You stiff-necked,” he says, “and uncircumcised in heart and ears, you do always resist the Holy Ghost: as your fathers did, so do you. Which of the prophets have not your fathers persecuted? And they have slain them which showed before of the coming of the Just One; of whom you have been now the betrayers and murderers: who have received the Law by the disposition of angels, and have not kept it.” What is more evident than this? What more strong than such an authority? The Law, indeed, was given to that people by the disposition of angels; but the advent of our Lord Jesus Christ was by it prepared and pre-announced; and He Himself, as the Word of God, was in some wonderful and unspeakable manner in the angels, by whose disposition the Law itself was given. And hence He said in the Gospel, “For had you believed Moses, you would have believed me; for he wrote of me.” Therefore then the Lord was speaking by the angels; and the son of God, who was to be the Mediator of God and men, from the seed of Abraham, was preparing His own advent by the angels, that He might find some by whom He would be received, confessing themselves guilty, whom the Law unfulfilled had made transgressors. And hence the apostle also says to the Galatians, “Wherefore then serves the Law? It was added because of transgressions, till the seed should come to whom the promise was made, which [seed] was ordered through angels in the hand of a mediator;” that is, ordered through angels in His own hand. For He was not born in limitation, but in power. But you learn in another place that he does not mean any one of the angels as a mediator, but the Lord Jesus Christ Himself, in so far as He deigned to be made man: “For there is one God,” he says, “and one Mediator between God and man, the man Christ Jesus.” Hence that passover in the killing of the lamb: hence all those things which are figuratively spoken in the Law, of Christ to come in the flesh, and to suffer, but also to rise again, which Law was given by the disposition of angels; in which angels, were certainly the Father, and the Son, and the Holy Spirit; and in which, sometimes the Father, sometimes the Son, sometimes the Holy Spirit, and sometimes God, without any distinction of person, was figuratively signified by them, although appearing in visible and sensible forms, yet by His own creature, not by His substance, in order to the seeing of which, hearts are cleansed through all those things which are seen by the eyes and heard by the ears.

27. But now, as I think, that which we had undertaken to show in this book has been sufficiently discussed and demonstrated, according to our capacity; and it has been established, both by probable reason, so far as a man, or rather, so far as I am able, and by strength of authority, so far as the divine declarations from the Holy Scriptures have been made clear, that those words and bodily appearances which were given to these ancient fathers of ours before the incarnation of the Saviour, when God was said to appear, were wrought by angels: whether themselves speaking or doing something in the person of God, as we have shown that the prophets also were wont to do, or assuming from the creature that which they themselves were not, wherein God might be shown in a figure to men; which manner of showing also, Scripture teaches by many examples, that the prophets, too, did not omit. It remains, therefore, now for us to consider—since both in the Lord as born of a virgin, and in the Holy Spirit descending in a corporeal form like a dove, and in the tongues like as of fire, which appeared with a sound from heaven on the day of Pentecost, after the ascension of the Lord, it was not the Word of God Himself by His own substance, in which He is equal and eternal with the Father, nor the Spirit of the Father and of the Son by His own substance, in which He Himself also is equal and co-eternal with both, but assuredly a creature, such as could be formed and exist in these fashions, which appeared to corporeal and mortal senses—it remains, I say, to consider what difference there is between these manifestations and those which were proper to the Son of God and to the Holy Spirit, although wrought by the visible creature; which subject we shall more conveniently begin in another book.