The interpretation timeline
2 Thessalonians 2:6 Douay-Rheims

And now you know what withholdeth, that he may be revealed in his time.

A.D. 220 – 1863 8 witnesses

Patristic

before A.D. 750
220
A.D.
Tertullian Patristic
c. A.D. 150–220
“There is also another, even greater, obligation for us to pray for the emperors; yes, even for the continuance of the empire in general and for Roman interests. We realize that the tremendous force which is hanging over the whole world, and the very end of the world with its threat of dreadful afflictions, is arrested for a time by the continued existence of the Roman Empire. This event we have no desire to experience and, in praying that it may be deferred, we favor the continuance of Rome. APOLOGY 32.Chrysostom: One may naturally inquire what is that which restrains the man of lawlessness, and in addition, why Paul expresses it so obscurely. What then is it that holds back, that is, that hinders the revealing of, the Antichrist? Some indeed say, the grace of the Spirit, but others the Roman Empire. I agree with the latter position. Why? Because if Paul meant to say the Spirit, he would not have spoken obscurely but plainly, that even now the grace of the Spirit, that is the gifts, hold back the Antichrist. If not, he should have come by now, if his coming was to occur with the cessation of the gifts of the Spirit; for they have long since ceased. But because Paul said this of the Roman Empire, he merely touched the topic, understandably speaking covertly and darkly. For he had no need to create unnecessary enemies and useless dangers.… "For the mystery of lawlessness does already work." He speaks here of Nero, as if he were the type of the Antichrist.”
Source
379
A.D.
Basil of Caesarea Patristic
c. A.D. 330–379
“Now, if good order with its attendant harmony is characteristic of those who look to one source of authority and are subject to one king, then universal disorder and disharmony are a sign that leadership is lacking. By the same token, if we discover in our midst such discord as I have mentioned, both with regard to one another and with respect to the Lord's commands, it would either be an indictment or our rejection of the true king. That agrees with the scriptural saying, "only that he who now holds back does so until he is taken out of the way," or of denial of him according to the psalmist, "The fool has said in his heart: There is no God."”
Source
date
unknown
c. A.D. 380
“For in the last days false prophets shall be multiplied, and such as corrupt the word; and the sheep shall be changed into wolves, and love into hatred: for through the abounding of iniquity the love of many shall wax cold. For men shall hate, and persecute, and betray one another. And then shall appear the deceiver of the world, the enemy of the truth, the prince of lies, [2 Thessalonians 2:3-12] whom the Lord Jesus "shall destroy with the spirit of His mouth, who takes away the wicked with His lips; and many shall be offended at Him. But they that endure to the end, the same shall be saved. And then shall appear the sign of the Son of man in heaven;" [Isaiah 11:4; Matthew 24:1-51] and afterwards shall be the voice of a trumpet by the archangel; and in that interval shall be the revival of those that were asleep. And then shall the Lord come, and all His saints with Him, with a great concussion above the clouds, with the angels of His power, [Matthew 16:27] in the throne of His kingdom, to condemn the devil, the deceiver of the world, and to render to every one according to his deeds. "Then shall the wicked go away into everlasting punishment, but the righteous shall go into life eternal," [Matthew 25:46] to inherit those things "which eye has not seen, nor ear heard, nor have entered into the heart of man, such things as God has prepared for them that love Him;" [1 Corinthians 2:9] and they shall rejoice in the kingdom of God, which is in Christ Jesus.”
Source
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“"And now ye know that which restraineth, to the end that he may be revealed in his own season. For the mystery of lawlessness doth already work: only there is one that restraineth now, until he be taken out of the way." One may naturally enquire, what is that which withholdeth, and after that would know, why Paul expresses it so obscurely. What then is it that withholdeth, that is, hindereth him from being revealed? Some indeed say, the grace of the Spirit, but others the Roman empire, to whom I most of all accede. Wherefore? Because if he meant to say the Spirit, he would not have spoken obscurely, but plainly, that even now the grace of the Spirit, that is the gifts, withhold him. And otherwise he ought now to have come, if he was about to come when the gifts ceased; for they have long since ceased. But because he said this of the Roman empire, he naturally glanced at it, and speaks covertly and darkly. For he did not wish to bring upon himself superfluous enmities, and useless dangers. For if he had said that after a little while the Roman empire would be dissolved, they would have warred against him. And he did not say that it will be quickly, although he is always saying it-but what? "that he may be revealed in his own season," he says, "For the mystery of lawlessness doth already work." He speaks here of Nero, as if he were the type of Antichrist. For he too wished to be thought a god. And he has well said, "the mystery"; that is, it worketh not openly, as the other, nor without shame. For if there was found a man before that time, he means, who was not much behind Antichrist in wickedness, what wonder, if there shall now be one? But he did not also wish to point him out plainly: and this not from cowardice, but instructing us not to bring upon ourselves unnecessary enmities, when there is nothing to call for it. So indeed he also says here. "Only there is one that restraineth now, until he be taken out of the way," that is, when the Roman empire is taken out of the way, then he shall come. And naturally. For as long as the fear of this empire lasts, no one will willingly exalt himself, but when that is dissolved, he will attack the anarchy, and endeavor to seize upon the government both of man and of God. For as the kingdoms before this were destroyed, for example, that of the Medes by the Babylonians, that of the Babylonians by the Persians, that of the Persians by the Macedonians, that of the Macedonians by the Romans: so will this also be by the Antichrist, and he by Christ, and it will no longer withhold. And these things Daniel delivered to us with great clearness.”
Source
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“Then as for the words, "And now ye know what withholdeth," i.e., ye know what hindrance or cause of delay there is, "that he might be revealed in his own time;" they show that he was unwilling to make an explicit statement, because he said that they knew. And thus we who have not their knowledge wish and are not able even with pains to understand what the apostle referred to, especially as his meaning is made still more obscure by what he adds. For what does he mean by "For the mystery of iniquity doth already work: only he who now holdeth, let him hold until he be taken out of the way: and then shall the wicked be revealed?" I frankly confess I do not know what he means. I will nevertheless mention such conjectures as I have heard or read. Some think that the Apostle Paul referred to the Roman empire, and that he was unwilling to use language more explicit, lest he should incur the calumnious charge of wishing ill to the empire which it was hoped would be eternal; so that in saying, "For the mystery of iniquity doth already work," he alluded to Nero, whose deeds already seemed to be as the deeds of Antichrist. And hence some suppose that he shall rise again and be Antichrist. Others, again, suppose that he is not even dead, but that he was concealed that he might be supposed to have been killed, and that he now lives in concealment in the vigor of that same age which he had reached when he was believed to have perished, and will live until he is revealed in his own time and restored to his kingdom. But I wonder that men can be so audacious in their conjectures. However, it is not absurd to believe that these words of the apostle, "Only he who now holdeth, let him hold until he be taken out of the way," refer to the Roman empire, as if it were said, "Only he who now reigneth, let him reign until he be taken out of the way." "And then shall the wicked be revealed:" no one doubts that this means Antichrist. But others think that the words, "Ye know what withholdeth," and "The mystery of iniquity worketh," refer only to the wicked and the hypocrites who are in the Church, until they reach a number so great as to furnish Antichrist with a great people, and that this is the mystery of iniquity, because it seems hidden...”
Source

Scholastic

c. 1100 – 1500
1272
A.D.
Thomas Aquinas Catholic
1225–1274
“Above, the Apostle, foretelling, narrated the coming and the guilt of the Antichrist; here he shows the cause of the delay. And first he shows that they have the cause of this knowledge; second he sets forth that cause obscurely, at the words for the mystery. He says therefore: I say that the man of sin must be revealed. And what now restrains — that is, what is the cause that delays it — you know, because I have told you, so that thus at present it is restrained, that in its own time — that is, at the fitting time — it may be revealed. Ecclesiastes 8:6: for every matter there is a time and an opportunity. And in the same place, 3:11: God has made everything good in its time, et cetera. Then, when he says for the mystery, etc., he sets forth its cause. And this text is expounded in many ways, because this word mystery can be in the nominative case, or the accusative. If in the first way, the sense is: I say that in its own time, because even now the mystery — that is, figuratively hidden — is at work in pretenders, who seem good, and yet are evil. And these perform the office of the Antichrist. 2 Timothy 3:5: having a form of godliness, but denying its power. But in the second way, the sense is: for the Devil, in whose power the Antichrist will come, already begins to work his iniquity secretly, through tyrants and seducers, because the persecutions of the Church of this time are figures of that last persecution against all the good, and are, as it were, imperfect in comparison to it. Only that he who now restrains, et cetera. This is expounded in many ways. In one way, according to the Gloss and Augustine, who say that certain persons supposed that Nero, who first persecuted the Christians, was the Antichrist, and that he had not been slain, but withdrawn, and would at some time be restored. Whence the Apostle, dispelling this, says only that he who now restrains — the Roman empire — should hold, until he be taken out of the way — that is, until he dies. But this way is not fitting, because it is many years since Nero died, namely in that year in which the Apostle. But it is better that it be referred to Nero, insofar as he is a public person of the Roman empire, until he be taken out of the way — that is, until the Roman empire be removed from this world. Isaiah 23:9: the Lord of hosts has purposed this, to bring down the pride of all glory, and unto ignominy, et cetera. Or otherwise: only that he who now restrains — that is, who now holds back the coming of the Antichrist — should hold, lest he come; as though it were necessary that still some should come to the faith, and some fall away. As if he were to say: that the departure and approach, which now holds until he come, should hold until that foul one be taken away. Or thus: only let him who now holds the faith, hold it — that is, let him be firm in it. Apocalypse 2: hold fast what you have, that no one take your crown — until he be taken out of the way — that is, until the mingled congregation of the wicked be separated, and become distinct, which will be in the persecution of the Antichrist. Or only, etc. — that is, that the mystery of iniquity, that is, the mystical iniquity, which restrains, may restrain until it be taken out of the midst — that is, until the iniquity be brought into the open, and become, as it were, something existing openly out of the midst. For many now sin in secret, but nevertheless at some time it will be done openly; for God bears with sinners as long as they are hidden, until they sin publicly, and then he will not bear with them, as is clear concerning the Sodomites in Genesis 19:24. But nevertheless Augustine confesses that he does not know what the Apostle is saying to them, who already knew. Whence he says, what now restrains, you know. And besides, this was not very necessary to know. Then, when he says and then, etc., the coming of the wicked one is set forth, and his punishment. First the manifestation; second his punishment. As to the first, he says that wicked one — in the singular — shall be revealed, because his guilt will be manifest, whom the Lord Jesus will slay with the spirit of his mouth. Isaiah 11: the zeal of the Lord of hosts shall do this — that is, the zeal of justice, which is love. For the spirit of Christ is the love of Christ, and this zeal belongs to the Holy Spirit, which he has toward the Church. Or by the spirit of his mouth, that is, by his command; because Michael is to slay him on the Mount of Olives, from where Christ ascended; thus also Julian was extinguished by the divine hand. And this is the present punishment, although he will also be punished eternally in the future, because he will destroy by the brightness, etc. — that is, by his coming, illuminating all things. 1 Corinthians 4:5: he will bring to light the hidden things of darkness, et cetera. And he will destroy, I say, eternally, namely by damnation. Psalm 27:5: he shall destroy them, et cetera. And he says, by the brightness, because he himself was seen to darken the Church, and darkness is driven away by brightness, because whatever the Antichrist shall show, it shall be shown to have been a lie. Then, when he says whose coming is, he foretells the power of the Antichrist. And concerning this he does two things: first he sets forth his power to seduce; second, the cause of this from the justice of the Lord, at the words because the love. Again the first is divided into three, because first he sets forth the author of this power; second, the manner of seducing; third he shows those who are to be seduced. The author of this power is the Devil, and therefore Christ will destroy him. 1 John 3:8: for this the Son of God appeared, that he might dissolve the works of the Devil. And therefore he says that the coming of the Antichrist will be according to the working of Satan — that is, from his instigation. Apocalypse 20:7: Satan will be released from his prison, and will go out, and will seduce the nations, et cetera. For something works according to the working of Satan, as in the possessed, in whom he not only instigates the will, but also impedes the use of reason; which, however, is not imputed to his fault, because he does not have the use of free will. But the Antichrist is not so; rather he will have the use of free will, in which the Devil is suggesting, as is said of Judas, John chapter 3: Satan entered into him — namely, by instigating. But he will deceive in this manner: first through secular power; second through the power of miracles. As to the first, he says in all power — namely, secular power. Daniel 11:43: he shall have dominion over the treasures of gold and silver, and over all the precious things of Egypt. Or power, namely feigned. But as to the second he says in signs, et cetera. Signs are certain wonders, even small ones. But prodigies are great, which show something prodigious, as it were far from the finger. Revelation 13:13: he did great signs, so that he even made fire come down from heaven, et cetera. Matthew 24:24: they shall give great signs and wonders, so that, if it were possible, even the elect would be led into error. And he says lying. A miracle is called lying, either because it lacks the true nature of the deed, or the true nature of a miracle, or the due end of a miracle. The first happens in illusions, when through demons the sight is deceived, so that something appears other than it is: as Simon Magus made a ram be beheaded, and afterward it was shown alive; and a man was beheaded, and afterward the man, who was believed to have been beheaded, was shown alive, and was believed to have been raised. And this men do by changing phantasms and deceiving. In the second way, those things are called miracles improperly which are full of wonder, when the effect is seen and the cause is unknown. Therefore, those things which have a cause hidden to someone, and not absolutely, are indeed called wonders, and not miracles absolutely. But those which have a cause absolutely hidden are properly miracles, whose cause is God himself, the glorious one, because they transcend the whole order of created nature. But sometimes certain wonders happen, not beyond the order of nature, but having hidden causes; and these the demons do much more, who know the powers of nature, and who have determined efficacies for special effects, and these the Antichrist will do; but not those which have the true nature of a miracle, because they cannot do those things which are above nature. In the third way, they are called miracles insofar as they are ordered to bearing witness to the truth of the faith, to bringing back the faithful to God. Mark, last chapter: the Lord working with them, and confirming the word with signs that followed. But if the glory of miracles is present to someone, and he does not use them for this end, the miracles are indeed true as to the nature of the deed done, and as to the nature of a miracle, but they are false as to the due end, and the intention of God. But nevertheless this will not be in the Antichrist, because no one against the faith does true miracles, because God is not a witness of falsehood. Whence someone preaching false doctrine cannot do miracles, although someone having an evil life could. Then he shows those who are to be seduced, when he says to those who perish — that is, among those foreknown unto perdition. John 17:12: none of them perished, but the son of perdition. And this for this reason, because John 10:27: my sheep hear my voice.”

Post-Reformation

c. 1650 – 1900
1832
A.D.
Adam Clarke Methodist
1762–1832
“And now ye know what withholdeth - I told you this among other things; I informed you what it was that prevented this man of sin, this son of perdition, from revealing himself fully.”
1863
A.D.
1796–1863
“This is thought to refer to the fall of the Roman Empire, of which he did not wish to speak openly. St. Chrysostom remarks : " If he had said, that in a short time the Roman Empire will be overthrown, they would have quickly despatched him as a seditious man, and all the faithful likewise, as living and combating under him."”
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.