The interpretation timeline
Revelation 1:7 Douay-Rheims

Behold, he cometh with the clouds, and every eye shall see him, and they also that pierced him. And all the tribes of the earth shall bewail themselves because of him. Even so. Amen.

A.D. 108 – 1871 10 witnesses 13 excerpts

Patristic

before A.D. 750
date
unknown
c. A.D. 100
“Watch for your life's sake. Let not your lamps be quenched, nor your loins unloosed; but be ye ready, for ye know not the hour in which our Lord cometh. But often shall ye come together, seeking the things which are befitting to your souls: for the whole time of your faith will not profit you, if ye be not made perfect in the last time. For in the last days false prophets and corrupters shall be multiplied, and the sheep shall be turned into wolves, and love shall be turned into hate; for when lawlessness increaseth, they shall hate and persecute and betray one another, and then shall appear the world-deceiver as Son of God, and shall do signs and wonders, and the earth shall be delivered into his hands, and he shall do iniquitous things which have never yet come to pass since the beginning. Then shall the creation of men come into the fire of trial, and many shall be made to stumble and shall perish; but they that endure in their faith shall be saved from under the curse itself. And then shall appear the signs of the truth; first, the sign of an out-spreading in heaven; then the sign of the sound of the trumpet; and the third, the resurrection of the dead; yet not of all, but as it is said: The Lord shall come and all His saints with Him. Then shall the world see the Lord coming upon the clouds of heaven.”
Source
108
A.D.
c. A.D. 50–107
“And I know that He was possessed of a body not only in His being born and crucified, but I also know that He was so after His resurrection, and believe that He is so now. When, for instance, He came to those who were with Peter, He said to them, "Lay hold, handle Me, and see that I am not an incorporeal spirit." "For a spirit hath not flesh and bones, as ye see Me have." And He says to Thomas, "Reach hither thy finger into the print of the nails, and reach hither thy hand, and thrust it into My side; " and immediately they believed that He was Christ. Wherefore Thomas also says to Him, "My Lord, and my God." And on this account also did they despise death, for it were too little to say, indignities and stripes. Nor was this all; but also after He had shown Himself to them, that He had risen indeed, and not in appearance only, He both ate and drank with them during forty entire days. And thus was He, with the flesh, received up in their sight unto Him that sent Him, being with that same flesh to come again, accompanied by glory and power. For, say the [holy] oracles, "This same Jesus, who is taken up from you into heaven, shall so come, in like manner as ye have seen Him go unto heaven." But if they say that He will come at the end of the world without a body, how shall those "see Him that pierced Him," and when they recognise Him, "mourn for themselves? " For incorporeal beings have neither form nor figure, nor the aspect of an animal possessed of shape, because their nature is in itself simple.”
Source
220
A.D.
Tertullian Patristic
c. A.D. 150–220
“And then shall they "learn to know Him whom they pierced, and shall beat their breasts tribe by tribe; " of course because in days bygone they did not know Him when conditionedin the humility of human estate.”
“That, however, which we have reserved for a concluding argument, will now stand as a plea for all, and for the apostle himself, who in very deed would have to be charged with extreme indiscretion, if he had so abruptly, as some will have it, and as they say, blindfold, and so indiscriminately, and so unconditionally, excluded from the kingdom of God, and indeed from the court of heaven itself, all flesh and blood whatsoever; since Jesus is still sitting there at the right hand of the Father, man, yet God-the last Adam, yet the primary Word-flesh and blood, yet purer than ours-who "shall descend in like manner as He ascended into heaven" the same both in substance and form, as the angels affirmed, so as even to be recognised by those who pierced Him. Designated, as He is, "the Mediator between God and man," He keeps in His own self the deposit of the flesh which has been committed to Him by both parties-the pledge and security of its entire perfection.”
Source
“For they affirm that without those letters truth cannot be found; nay more, that in those letters the whole plenitude and perfection of truth is comprised; for this was why Christ said, "I am the Alpha and the Omega." In fact, they say that Jesus Christ descended, that is, that the dove came down on Jesus; and, since the dove is styled by the Greek name peristera/-(peristera), it has in itself this number DCCCI.”
Source
303
A.D.
c. A.D. 250–303
“"Behold, He shall come with clouds, and every eye shall see Him." For He who at first came hidden in the manhood that He had undertaken, shall after a little while come to judgment manifest in majesty and glory. And what saith He?”
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“and they that pierced him. a prophecy which implies that Christ will come in the very flesh in which He was crucified.”
“He is "good," according to that sight, according to which God appears to the pure in heart; for "truly God is good unto Israel even to such as are of a clean heart." But when the wicked shall see the Judge, He will not seem good to them; because they will not rejoice in their heart to see Him, but all "kindreds of the earth shall then wail because of Him," namely, as being reckoned in the number of all the wicked and unbelievers.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Behold he cometh with clouds,.... John carries on the account of Christ in his kingly office, one branch of which is to execute judgment; and describes him by a future coming of his, which cannot be understood of his coming to take vengeance on the Jews, at the time of Jerusalem's destruction, though that is sometimes expressed in such language, and with such circumstances, as here; see Mat 24:30; because if this revelation was made to John, in the latter end of Domitian's reign, as is commonly reported by the ancients, and in the year 95 or 96, as chronologers generally place it, it must be upwards of twenty years after the destruction of Jerusalem, and therefore cannot relate to that; nor to his coming in a spiritual sense to convert the Jews in the latter day; for this coming is personal, and with clouds, when he will be seen by every eye; all which circumstances do not so well agree with that; besides, all the kindreds of the earth will not lament on that account: the wicked will take little notice of it, the tribes of the Jews will rejoice at it, and so will all the converted Gentiles: it is better therefore to understand this of Christ's second coming to judge the quick and dead, which is represented as just at hand, to denote the certainty of it; and a "behold" is prefixed to it, to excite attention, and to denote the importance of it: things of great moment, and very surprising, will then be done; Christ will appear in great glory and majesty, the dead in Christ will be raised, Christ's personal kingdom will take place, and the general judgment come on. The manner of his coming will be "with clouds"; either figuratively, with angels, who will attend him both for grandeur and service, or literally, in the clouds of heaven; he shall descend in like manner as he ascended, and as Daniel prophesied he should, Dan 7:13. Hence, one of the names of the Messiah, with the Jews, is, "Anani" (r), which signifies "clouds"; and his coming is so described, both to denote the grand and magnificent manner, in which he will come, making the clouds his chariots; and to strike terror into his enemies, clouds and darkness being about him, thunder and lightning breaking out of them, as tokens of that vengeance he comes to take upon them; as also the visibility of his coming, he shall descend from the third heaven, where he now is, into the airy heaven, and sit upon the clouds, as on his throne, and be visible to all: hence it follows, and every eye shall see him; that is, everyone that has eyes shall see him, or all men shall see him; the righteous shall see him, and be glad; they shall see him in his glory, as he is, and for themselves, and be satisfied; they shall rejoice at the sight of him; they will be filled with joy unspeakable, and full of glory: but the wicked will see him and tremble; they will be filled with the utmost consternation and astonishment; they will not be able to bear the sight of him; they will flee from him, and call to the rocks and mountains to fall on them, and hide them from his face, And they also which pierced him; his hands, feet, and side, when they crucified him; both the Roman soldiers, who actually did it, and the body of the Jewish nation, the rulers and common people, who consented to it, and at whose instigation it was done; these, being raised from the dead, shall see him with their bodily eyes, whom they so used, And all kindreds of the earth shall wail because of him; all the wicked, in the several parts of the world, will lament, and wring their hands, and express the inward terror and horror of their minds, at his appearing; they will fear his resentment of all their wicked words and actions; will dread his wrath, and tremble at his righteous judgment: even so, Amen, says John, and so say all true believers; what the wicked lament, they rejoice at; they desire the coming of Christ, they love it, look and long for it; they believe it shall be, and wish it may be quickly, as in Rev 22:20; This expression of faith in, and desire after the coming of Christ, is signified by two words, the one Greek and the other Hebrew; suggesting, that this is an article of faith among all the saints of all nations, Jews and Gentiles, and is what they are wishing and waiting for, (r) Targum in 1 Chron. iii. 24. vid. Beckii Not. in ib. Yalkut Simeoni, par. 2. fol. 85. 2.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“Behold, he cometh with clouds - This relates to his coming to execute judgment on the enemies of his religion; perhaps to his coming to destroy Jerusalem, as he was to be particularly manifested to them that pierced him, which must mean the incredulous and rebellious Jews. And all kindreds of the earth - Πασαι αἱ φυλαι της γης· All the tribes of the land. By this the Jewish people are most evidently intended, and therefore the whole verse may be understood as predicting the destruction of the Jews; and is a presumptive proof that the Apocalypse was written before the final overthrow of the Jewish state. Even so, Amen - Ναι, αμην· Yea, Amen. It is true, so be it. Our Lord will come and execute judgment on the Jews and Gentiles. This the Jews and Romans particularly felt.”
Source
1849
A.D.
1871
A.D.
1871
“with clouds--Greek, "the clouds," namely, of heaven. "A cloud received Him out of their sight" at His ascension (Act 1:9). His ascension corresponds to the manner of His coming again (Act 1:11). Clouds are the symbols of wrath to sinners. every eye--His coming shall therefore be a personal, visible appearing. shall see--It is because they do not now see Him, they will not believe. Contrast Joh 20:29. they also--they in particular; "whosoever." Primarily, at His pre-millennial advent the Jews, who shall "look upon Him whom they have pierced," and mourn in repentance, and say, "Blessed is He that cometh in the name of the Lord." Secondarily, and here chiefly, at the general judgment all the ungodly, not only those who actually pierced Him, but those who did so by their sins, shall look with trembling upon Him. John is the only one of the Evangelists who records the piercing of Christ's side. This allusion identifies him as the author of the Apocalypse. The reality of Christ's humanity and His death is proved by His having been pierced; and the water and blood from His side were the antitype to the Levitical waters of cleansing and blood offerings. all kindreds . . . shall wail--all the unconverted at the general judgment; and especially at His pre-millennial advent, the Antichristian confederacy (Zac 12:3-6, Zac 12:9; Zac 14:1-4; Mat 24:30). Greek, "all the tribes of the land," or "the earth." See the limitation to "all," Rev 13:8. Even the godly while rejoicing in His love shall feel penitential sorrow at their sins, which shall all be manifested at the general judgment. because of--Greek, "at," or "in regard to Him." Even so, Amen--Gods seal of His own word; to which corresponds the believer's prayer, Rev 22:20. The "even so" is Greek; "Amen" is Hebrew. To both Gentiles and Jews His promises and threats are unchangeable.”
Source

Undated

date unknown
date
unknown
Glossa Ordinaria Medieval
“Behold, he cometh, etc. And truly you ought to glorify him, because he it is who is to come to reward. With the clouds, that is, with the saints: because they were clouds by raining down doctrine upon others, and by working miracles; or, as he ascended in a cloud, so will he come in a cloud, by which we understand the clemency of God, whereby to the good there is refreshment and illumination, but to the evil terror and blinding. Which also was signified by the cloud by which the children of Israel were led out of Egypt. And they shall see him. Another translation has: All the earth shall see him such. As if he said: They shall see him such as the impious did not believe that he would come. Every eye. The good, that they may rejoice; the evil, that they may be confounded, shall see. They shall bewail. Or they shall be dashed against him, powerless to resist his dominion, after the likeness of a stone and of earthen vessels. Or they shall bewail themselves, that is, they shall grieve looking upon those who are founded upon him, because they shall not grieve so much over the torment itself as that they shall be driven away from such fellowship.”
Source
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.