10 He that descended is the same also that ascended up far above all heavens, that he might fill all things.)
[AD 407] John Chrysostom on Ephesians 4:9-10
"Now this, He ascended, what is it, but that He also descended into the lower parts of the earth? He that descended, is the same also that ascended far above all the Heavens, that He might fill all things."

When you hear these words, think not of a mere removal from one place to another; for what Paul establishes in the Epistle to the Philippians [Philippians 2:5-8], that very argument is he also insisting upon here. In the same way as there, when exhorting them concerning lowliness, he brings forward Christ as an example, so does he here also, saying, "He descended into the lower parts of the earth." For were not this so, this expression which he uses, "He became obedient even unto death" [Philippians 2:8-9], were superfluous; whereas from His ascending, he implies His descent, and by "the lower parts of the earth," he means "death," according to the notions of men; as Jacob also said, "Then shall you bring down my gray hairs with sorrow to the grave." [Genesis 32:48] And again as it is in the Psalm, "Lest I become like them that go down into the pit" [Psalm 143:7], that is like the dead. Why does he descant upon this region here? And of what captivity does he speak? Of that of the devil; for He took the tyrant captive, the devil, I mean, and death, and the curse, and sin. Behold His spoils and His trophies.

"Now this, He ascended, what is it but that He also descended?"

This strikes at Paul of Samosata and his school.

"He that descended, is the same also that ascended far above all the Heavens, that He might fill all things."

He descended, says he, into the lower parts of the earth, beyond which there are none other: and He ascended up far above all things, to that place, beyond which there is none other. This is to show His divine energy, and supreme dominion. For indeed even of old had all things been filled.

[AD 202] Irenaeus on Ephesians 4:10
But what Isaiah said, "From the height above, or from the depth beneath," [Isaiah 7:11] was meant to indicate, that "He who descended was the same also who ascended." [Ephesians 4:10]

[AD 370] Gaius Marius Victorinus on Ephesians 4:10
Nothing in the cosmos is left untouched by Christ. He indeed descended to the lower parts of the earth and ascended above all the heavens. What heavens? Some say three, some more … but what does it matter? Christ, who ascended, ascended above all the heavens, however many. For eternity is now presently reigning in heaven and incorruptible life. All things there live by the Spirit. This reordering did not occur, however, until the descent of Christ. Once the mystery [of the cross] had been accomplished, all these received salvation after the passion and ascent of Christ and have been perfected. For this is what he means by “so that he might fulfill all,” that is, make them perfect and full, with nothing lacking.… Surely this could not be understood to infer that he fulfilled his mission on earth but set nothing right in the heavens and perfected nothing there.

[AD 420] Jerome on Ephesians 4:10
Could he possibly have passed through and beyond all the heavens and all the supernal regions and the heavenly orbits which philosophers call the spheres to take his place in the highest heaven, in its topmost location? Or should we rather believe that, transcending and spurning everything corporeal and contemplating the eternal, he has taken his place above the heavens, that is, above all that is visible? I think this the better opinion. Therefore the Son of God descended to the lower parts of the earth and ascended above all the heavens, so that he might fulfill not only the Law and the Prophets but also certain hidden dispensations which only the Father knew. He also descended to the lower parts and ascended to heaven, so that he might bring fulfillment to those who were in those regions, so far as they were able to receive. From this we know that before Christ descended and ascended everything was void and in need of his fullness.