7 Lift up your head, O ye gates; and be ye lift up, ye everlasting doors; and the King of glory shall come in.
[AD 165] Justin Martyr on Psalms 24:7
Solomon was not the Lord of hosts. But, when our Christ arose from the dead and ascended into heaven, the heavenly princes chosen by God were ordered to open the gates of heaven that the King of glory might enter and sit at the right hand of the Father until he makes his enemies his footstool. Now, when these heavenly princes saw that he was in appearance without beauty, honor or glory, and not recognizing him, they asked, “Who is this King of glory?” And the Holy Spirit, either in his own name or in the Father’s, answered, “The Lord of hosts. He is the King of glory.” But I am sure that everyone will admit that none of the gatekeepers of the temple at Jerusalem ever said of Solomon (though he was ever so glorious a king) or of the ark of testimony, “Who is this King of glory?”

[AD 220] Tertullian on Psalms 24:7
God spared not his own Son for you, letting him become a curse for us; for “cursed is he who hangs on a tree”;31 … that he might redeem us from our sins. The sun was darkened on the day of our redemption; hell lost its right to us, and we were enrolled for heaven. The eternal gates were lifted up that the King of glory, the Lord of might, might enter in, and humankind, born of the earth, destined for hell, was purchased for heaven.

[AD 235] Hippolytus of Rome on Psalms 24:7
He comes to the heavenly gates: angels accompany Him: and the gates of heaven were closed. For He has not yet ascended into heaven. Now first does He appear to the powers of heaven as flesh ascending. Therefore to these powers it is said by the angels, who are the couriers of the Saviour and Lord: "Lift up your gates, ye princes; and be lifted up, ye everlasting doors: and the King of glory shall come in.

[AD 373] Athanasius of Alexandria on Psalms 24:7
It was not the Word himself that needed an opening of the gates, being Lord of all; nor were any of his works closed to their maker; but we it was that needed it, whom he carried up by his own body. For as he offered it to death on behalf of all, so by it he once more made ready the way up into the heavens.

[AD 373] Athanasius of Alexandria on Psalms 24:7
The Word, being the image of the Father and immortal, took the form of a servant, and as man he underwent death for us in his flesh, that thereby he might offer himself for us through death to the Father. Likewise also, as man, he is said because of us and for us to be highly exalted, that as by his death we all died in Christ, so again in Christ himself we might be highly exalted, being raised from the dead and ascending into heaven, “where the forerunner Jesus has entered for us, not into the figures of the true, but into heaven itself, now to appear in the presence of God for us.” But if no Christ has entered into heaven itself for us, even though he was previously and always Lord and Framer of the heavens, then it is for us, therefore, that the present exaltation is written. And as he himself, who sanctifies all, also says that he sanctifies himself to the Father for our sakes, not that the Word may become holy but that he himself may in himself sanctify all of us, in like manner we must take the present phrase, “He highly exalted him”—not that he himself needed to be exalted, for he is already the highest, but that he may become righteousness for us, and that we may be exalted in him and may enter the gates of heaven, which he has also opened for us, the forerunners saying, “Lift up your gates, O you rulers, and be lifted up, you everlasting doors, and the King of glory shall come in.” For here also the gates were not shut on him who is the Lord and Maker of all, but because of us this too is written, to whom the door of paradise was shut. And therefore in a human relation, because of the flesh that he bore, it is said of him, “Lift up your gates,” and “shall come in,” as if a man were entering; but in a divine relation on the other hand it is said of him, since “the Word was God,” that he is the “Lord” and the “King of glory.” Such our exaltation the Spirit foreannounced in the eighty-ninth psalm, saying, “And in your righteousness shall they be exalted, for you are the glory of their strength.” And if the Son is Righteousness, then he is not exalted because he himself was in need, but it is we who are exalted in that Righteousness, which is he.

[AD 390] Gregory of Nazianzus on Psalms 24:7
If he ascend up into heaven, ascend with him. Be one of those angels who escort him or one of those who receive him. Bid the gates be lifted up, or be made higher, that they may receive him, exalted after his passion. Answer to those who are in doubt because he bears up with him his body and the tokens of his passion, which he did not have when he came down, and who therefore, inquire, “Who is the King of glory?” that it is the Lord strong and mighty, as in all things that he has done from time to time and does, so now in his battle and triumph for the sake of humankind. And give to the those who doubt the question the twofold answer. And if they marvel and say as in Isaiah’s drama who is this that comes from Edom and from the things of earth? Or how are the garments red of him that is without blood or body, as of one that treads in the full winepress? Set forth the beauty of the array of the body that suffered, adorned by the passion and made splendid by the Godhead, than which nothing can be more lovely or more beautiful.

[AD 410] Prudentius on Psalms 24:7
Learn what our temple is, if you would know;
It is one that no artisan has built,
A structure not of riven fir or pine,
Nor reared with blocks of quarried marble fair.
Its massive weight no columns high support
Beneath the arches of a gilded vault.
By God’s Word it was formed, not by his voice,
But by the everlasting Word, the Word made flesh.
This temple is eternal, without end,
This you attacked with scourge and cross and gall.
This temple was destroyed by bitter pains.
Its form was fragile from the Mother’s womb,
But when brief death the Mother’s part dissolved,
The Father’s might restored it in three days.
You have beheld my saving temple rise
On high, surrounded by an angel throng.
The everlasting gates uphold its roof;
Through lofty towers the glorious stairs arise,
And at the top appears a shining path.

[AD 420] Jerome on Psalms 24:7
As our Lord ascends to the Father in triumph, he issues commands to the angels saying, “Open to me the gates of justice; I will enter them and give thanks to the Lord.” These are the gates of which in the twenty-fourth psalm the angels were speaking while they were preparing for the entrance of the Lord: “Lift up, O gates, your lintels; reach up, you ancient portals, that the King of glory may come in!” Aptly are the gates commanded to lift up high and raise aloft their portals, since, in accordance with the dispensation and mystery of the flesh and in conformity with the victory of the cross, he reenters heaven mightier than he had come down on earth. “This gate is the Lord’s; the just shall enter it.” Through this gate, Peter has entered, and Paul, and all the apostles and martyrs, and today the saints continue to go in; through this gate, the thief was the first to pass with the Lord. Have faith, therefore, and be hopeful for your own entrance.

[AD 430] Augustine of Hippo on Psalms 24:7
"Take away your gates, you princes" [Psalm 24:7]. All you, that seek rule among men, remove, that they hinder not, the entrances which you have made, of desire and fear. "And be lifted up, you everlasting gates." And be lifted up, you entrances of eternal life, of renunciation of the world, and conversion to God. "And the King of glory shall come in." And the King, in whom we may glory without pride, shall come in: who having overcome the gates of death, and having opened for Himself the heavenly places, fulfilled that which He said, "Be of good cheer, for I have overcome the world." [John 16:33]

[AD 458] Theodoret of Cyrus on Psalms 24:7
Let no one wonder, I ask you, on hearing of the ignorance of the invisible powers: they have neither advance knowledge nor complete knowledge—only the divine nature has that knowledge. Angels and archangels, however, and the other companies of the invisible powers know as much as they are taught, for which reason the divine apostle also, speaking of them, said, “So that to the principalities and authorities in the heavenly places the wisdom of God in its rich variety might now be made known through the church.” Now, if they came to learn the divine wisdom more precisely through the life of the church, there is nothing out of order for the powers on high to be ignorant even of the mystery of Christ’s ascension when they see the human nature and do not perceive the divinity concealed in it.… No human being had ever passed through [the eternal gates]; but when God the Word became human and took up our first fruits, he both led the way up to heaven and took his place at the right hand of majesty in the highest places, above every principality, authority, dominion and every name that is named, not only in this age but also in the age to come.

[AD 460] Arnobius the Younger on Psalms 24:7
Now it is said to that one: Open the gates for your leaders. Cast away the example of Adam who is your leader according to the flesh, and lift up the eternal doors holding the powerful and mighty king of glory, powerful in battle, overcoming faults and their offsprings, worthless of spirit. Therefore, lift up the gates for your leaders. “Just as we have borne the likeness of the earthly man, so shall we bear the likeness of the heavenly man.”