Exodus 33:13

You ought to be very much ashamed of yourself on this account too, for permitting him to appear on the retired mountain in the company of Moses and Elias, whom he had come to destroy. This, to be sure, was what he wished to be understood as the meaning of that voice from heaven: “This is my beloved Son, hear Him”, Him , that is, not Moses or Elias any longer. The voice alone, therefore, was enough, without the display of Moses and Elias; for, by expressly mentioning whom they were to hear, he must have forbidden all others from being heard. …

Moreover, there comes to our aid, when we insist upon the Father and the Son as being Two , that regulating principle which has determined God to be invisible. When Moses in Egypt desired to see the face of the Lord, saying, “If therefore I have found grace in Thy sight, manifest Thyself unto me, that I may see Thee and know Thee,” God said, “Thou canst not see my face; for there shall no man see me, and live:” in other words, he who sees me shall die. Now we find that God has been seen by many persons, and yet that no one who saw Him died (at the sight). The truth is , they saw God according to the faculties of men, but not in accordance with the full glory of the Godhead. For the patriarchs are said to have seen God (as Abraham and Jacob), and the prophets (as, for instance Isaiah and Ezekiel), and yet they did not die. …

Neither need we be surprised that God, invisible as He is, should often have appeared visibly to the patriarchs. For as the sound which communicates the thought conceived in the silence of the mind is not the thought itself, so the form by which God, invisible in His own nature, became visible, was not God Himself. Nevertheless it is He Himself who was seen under that form, as that thought itself is heard in the sound of the voice; and the patriarchs recognized that, though the bodily form was not God, they saw the invisible God. …

28. Add, too, that which the Lord afterward said to Moses, “Thou canst not see my face: for there shall no man see my face, and live. And the Lord said, Behold, there is a place by me, and thou shall stand upon a rock: and it shall come to pass, while my glory passeth by, that I will put thee into a watch-tower of the rock, and will cover thee with my hand while I pass by: and I will take away my hand, and thou shalt see my back parts; but my face shall not be seen.”

17. And lest, perhaps, any one should say, And did not grace and truth come through Moses, who saw God, immediately he adds, “No one hath seen God at any time.” And how did God become known to Moses? Because the Lord revealed Himself to His servant. What Lord? The same Christ, who sent the law beforehand by His servant, that He might Himself come with grace and truth. “For no one hath seen God at any time.” And whence did He appear to that servant as far as he was able to receive Him? But “the Only-begotten,” he says, “who is in the bosom of the Father, He has declared Him.” What signifieth “in the bosom of the Father?” In the secret of the Father. …

12. “These things said Isaiah, when he saw His glory, and spake of Him.” What Isaiah saw, and how it refers to Christ the Lord, are to be read and learned in his book. For he saw Him, not as He is, but in some symbolical way to suit the form that the vision of the prophet had itself to assume. For Moses likewise saw Him, and yet we find him saying to Him whom he saw, “If I have found grace in Thy sight, show me now Thyself, that I may clearly see Thee;” for he saw Him not as He is. …

6. “Thy skill hath displayed itself wonderfully in me: it hath waxed mighty: I shall not be able to attain unto it” ( ver. 6 ). Listen now and hear somewhat, which is obscure indeed, yet bringeth no small pleasure in the understanding thereon. Moses, the holy servant of God, with whom God spake by a cloud, for, speaking after human fashion, He must needs speak to His servant through some work of His hands which He assumed,…longed and desired to see the true appearance of God, and said to God, who was conversing with him, “If now I have found grace in Thy sight, show me Thyself.” When this he desired vehemently, and would extort from God in that sort of friendly familiarity, if we may so speak, wherewith God deigned to treat him, that he might see His Glory and His Face, in such wise as we can speak of God’s Face, He said unto him, “Thou canst not see My Face; for no one hath seen My Face …

“No man hath seen God at any time.” By what connection of thought does the Apostle come to say this? After showing the exceeding greatness of the gifts of Christ, and the infinite difference between them and those ministered by Moses, he would add the reasonable cause of the difference. Moses, as being a servant, was minister of lower things, but Christ being Lord and King, and the King’s Son, brought to us things far greater, being ever with the Father, and beholding Him continually; wherefore He saith, “No man hath seen God at any time.” What then shall we answer to the most mighty of voice, Esaias, when he says, “I saw the Lord sitting upon a throne high and lifted up” ( Isa. vi. 1 ); and to John himself testifying of Him, that “he said these things when he had seen His glory”? ( c. xii. 41 .) What also to Ezekiel? for he too beheld Him sitting above the Cherubim. ( Ezek. i. …

This mystery then, which was manifested in the flesh and appeared in the world, and was preached to the Gentiles, many of the saints of old longed to see in the flesh, as they foresaw it in the spirit. For “Verily,” saith the Lord, “I say unto you that many prophets and righteous men have desired to see the things which ye see, and have not seen them; and to hear the things which ye hear and have not heard them.” And so the prophet Isaiah says: “O that Thou, Lord, would rend the heavens and come down,” and David too: “O Lord, bow the heavens and come down.” Moses also says: “Show me Thyself that I may see Thee plainly.” No one ever approached nearer to God speaking out of the clouds, and to the very presence of His glory than Moses who received the law. …