John 3:13

Ver 13. And no man has ascended up to heaven, but he that came down from heaven, even the Son of man which is in heaven.

AUG. After taking notice of this lack of knowledge in a person, who, on the strength of his magisterial station, set himself above others, and blaming the unbelief of such men, our Lord says, that if such as these do not believe, others will: No one has ascended into heaven, but He that came down from heaven, even the Son of man who is in heaven. This may be rendered: The spiritual birth shall be of such sort, as that men from being earthly shall become heavenly: which will not be possible, except they are made members of Me; so that he who ascends, becomes one with Him who descended. Our Lord accounts His body, i.e. His Church, as Himself.

GREG. Forasmuch as we are made one with Him, to the place from which He came alone in Himself, thither He returns alone in us; and He who is ever in heaven, daily ascends to heaven.

AUG. Although He was made the Son of man upon earth, yet His Divinity with which, remaining in heaven, He descended to earth, He has declared not to disagree with the title of Son of man, as He has thought His flesh worthy the name of Son of God. For through the Unity of person, by which both substances are one Christ, He walked upon earth, being Son of God; and remained in heaven, being Son of man. And the belief of the greater, involves belief in the less. If then the Divine substance, which is so far more removed from us, and could for our sake take up the substance of man so as to unite them in one person; how much more easily may we believe, that the Saints united with the man Christ, become with Him one Christ, so that while it is true of all, that they ascend by grace, it is at the same time true, that He alone ascends to heaven, Who came down from heaven.

CHRYS. Or thus: Nicodemus having said, We know that You are a teacher sent from God; our Lord says, And no man has ascended, &c. in that He might not appear to be a teacher only like one of the Prophets.

THEOPHYL. But when you hear that the Son of man came down from heaven, think not that His flesh came down from heaven; for this is the doctrine of those heretics, who held that Christ took His Body from heaven, and only passed through the Virgin.

CHRYS. By the title Son of man here, He does not mean His flesh, but Himself altogether; the lesser part of His nature being put to express the whole. It is not uncommon with Him to name Himself wholly from His humanity, or wholly from His divinity.

BEDE; If a man of set purpose descend naked to the valley, and there providing himself with clothes and armor, ascend the mountain again, he who ascended may be said to be the same with him who descended.

HILARY; Or, His descending from heaven is the source of His origin as conceived by the Spirit: Mary gave not His body its origin, though the natural qualities of her sex contributed its birth and increase. That He is the Son of man is from the birth of the flesh which was conceived in the Virgin. That He is in heaven is form the power of His everlasting nature, which did not contract the power of the Word of God, which is infinite, within the sphere of a finite body. Our Lord remaining in the form of a servant, far from the whole circle, inner and outer, of heaven and the world, yet as Lord of heaven and the world, was not absent therefrom. So then He came down from heaven because He was the Son of man; and He was in heaven, because the Word, which was made flesh, had not ceased to be the Word.

AUG. But you wonder that He was at once here, and in heaven. Yet such power has He given to His disciples. Hear Paul, Our conversation is in heaven. If the man Paul walked upon earth, and had his conversation in heaven; shall not the God of heaven and earth be able to be in heaven and earth?

CHRYS. That too which seems very lofty is still unworthy of His vastness. For He is not in heaven only, but every where, and fills all things. But for the present He accommodates Himself to the weakness of His hearer, that by degrees He may convert him.