On the Holy Trinity

³³ I do not know in what manner these men understand that the Ancient of Days appeared to Daniel, from whom the Son of man, which He deigned to be for our sakes, is understood to have received the kingdom; namely, from Him who says to Him in the Psalms, “You are my Son; this day have I begotten You; ask of me, and I shall give You the heathen for Your inheritance;” and who has “put all things under His feet.” If, however, both the Father giving the kingdom, and the Son receiving it, appeared to Daniel in bodily form, how can those men say that the Father never appeared to the prophets, and, therefore, that He only ought to be understood to be invisible whom no man has seen, nor can see? For Daniel has told us thus: “I beheld,” he says, “till the thrones were set, and the Ancient of Days did sit, whose garment was white as snow, and the hair of His head like the pure wool: His throne was like the fiery flame, and His wheels as burning fire; a fiery stream issued and came forth from before Him: thousand thousands ministered unto Him, and ten thousand times ten thousand stood before Him: the judgment was set, and the books were opened,” etc. And a little after, “I saw,” he says, “in the night visions, and behold, one like the Son of man came with the clouds of heaven, and came to the Ancient of Days, and they brought Him near before Him. And there was given Him dominion, and glory, and a kingdom, that all peoples, nations, and languages should serve Him: His dominion is an everlasting dominion, which shall not pass away, and His kingdom that which shall not be destroyed.” Behold the Father giving, and the Son receiving, an eternal kingdom; and both are in the sight of him who prophesies, in a visible form. It is not, therefore, unsuitably believed that God the Father also was wont to appear in that manner to mortals.

34. Unless, perhaps, some one shall say, that the Father is therefore not visible, because He appeared within the sight of one who was dreaming; but that therefore the Son and the Holy Spirit are visible, because Moses saw all those things being awake; as if, forsooth, Moses saw the Word and the Wisdom of God with fleshly eyes, or that even the human spirit which quickens that flesh can be seen, or even that corporeal thing which is called wind—how much less can that Spirit of God be seen, who transcends the minds of all men, and of angels, by the ineffable excellence of the divine substance? Or can any one fall headlong into such an error as to dare to say, that the Son and the Holy Spirit are visible also to men who are awake, but that the Father is not visible except to those who dream? How, then, do they understand that of the Father alone, “Whom no man has seen, nor can see.”? When men sleep, are they then not men? Or cannot He, who can fashion the likeness of a body to signify Himself through the visions of dreamers, also fashion that same bodily creature to signify Himself to the eyes of those who are awake? Whereas His own very substance, whereby He Himself is that which He is, cannot be shown by any bodily likeness to one who sleeps, or by any bodily appearance to one who is awake; but this not of the Father only, but also of the Son and of the Holy Spirit. And certainly, as to those who are moved by the visions of waking men to believe that not the Father, but only the Son, or the Holy Spirit, appeared to the corporeal sight of men—to omit the great extent of the sacred pages, and their manifold interpretation, such that no one of sound reason ought to affirm that the person of the Father was nowhere shown to the eyes of waking men by any corporeal appearance—but, as I said, to omit this, what do they say of our father Abraham, who was certainly awake and ministering, when, after Scripture had premised, “The Lord appeared unto Abraham,” not one, or two, but three men appeared to him; no one of whom is said to have stood prominently above the others, no one more than the others to have shone with greater glory, or to have acted more authoritatively?

35. Wherefore, since in that our threefold division we determined to inquire, first, whether the Father, or the Son, or the Holy Spirit; or whether sometimes the Father, sometimes the Son, sometimes the Holy Spirit; or whether, without any distinction of persons, as it is said, the one and only God, that is, the Trinity itself, appeared to the fathers through those forms of the creature: now that we have examined, so far as appeared to be sufficient what places of the Holy Scriptures we could, a modest and cautious consideration of divine mysteries leads, as far as I can judge, to no other conclusion, unless that we may not rashly affirm which person of the Trinity appeared to this or that of the fathers or the prophets in some body or likeness of body, unless when the context attaches to the narrative some probable intimations on the subject. For the nature itself, or substance, or essence, or by whatever other name that very thing, which is God, whatever it be, is to be called, cannot be seen corporeally: but we must believe that by means of the creature made subject to Him, not only the Son, or the Holy Spirit, but also the Father, may have given intimations of Himself to mortal senses by a corporeal form or likeness. And since the case stands thus, that this second book may not extend to an immoderate length, let us consider what remains in those which follow.