Augustine of Hippo
Catena Aurea · Johannesevangelium 3
And no man hath ascended up to heaven, but he that came down from heaven, even the Son of man which is in heaven.
(De Pecc. mer. et remiss. c. xxxi) 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 hath ascended into heaven, butHe 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.