2:3 Let no man deceive you by any means: {3} for [that day shall not come], except there come a falling away first, and {e} that man of sin be revealed, the son of perdition;
(3) The apostle foretells that before the coming of the Lord, there will be a throne set up completely contrary to Christ's glory, in which that wicked man will sit, and transfer all things that appertain to God to himself: and many will fall away from God to him.
(e) By speaking of one, he singles out the person of the tyrannous and persecuting antichrist.
2:3 Except there come a falling away first. An apostasy must precede the Coming. That is, there shall be a general falling away from the purity of the faith. No apostasy of magnitude occurred in the history of the church for centuries, which could answer to Paul's description, but the gradual declension, corruption, and departure from the ancient faith, which was fully developed a few hundred years later, has always been spoken of by Protestant church historians as The Apostasy. There is no good reason for doubting that it is to the apostle refers.
And that man of sin be revealed. He shall be revealed then in connection with the apostasy.
The son of perdition. This expression occurs once elsewhere, and is there applied to Judas, an apostate (Joh 17:12). Here it evidently has a similar application. Some power, once Christian, falls away and becomes opposed to Christ.
2:3 Unless the falling away - From the pure faith of the gospel, come first. This began even in the apostolic age. But the man of sin, the son of perdition - Eminently so called, is not come yet. However, in many respects, the Pope has an indisputable claim to those titles. He is, in an emphatical sense, the man of sin, as he increases all manner of sin above measure. And he is, too, properly styled, the son of perdition, as he has caused the death of numberless multitudes, both of his opposers and followers, destroyed innumerable souls, and will himself perish everlastingly. He it is that opposeth himself to the emperor, once his rightful sovereign; and that exalteth himself above all that is called God, or that is worshipped - Commanding angels, and putting kings under his feet, both of whom are called gods in scripture; claiming the highest power, the highest honour; suffering himself, not once only, to be styled God or vice - god. Indeed no less is implied in his ordinary title, Most Holy Lord, or, Most Holy Father. So that he sitteth - Enthroned. In the temple of God - Mentioned Rev 11:1. Declaring himself that he is God - Claiming the prerogatives which belong to God alone.
2:1-4 If errors arise among Christians, we should set them right; and good men will be careful to suppress errors which rise from mistaking their words and actions. We have a cunning adversary, who watches to do mischief, and will promote errors, even by the words of Scripture. Whatever uncertainty we are in, or whatever mistakes may arise about the time of Christ's coming, that coming itself is certain. This has been the faith and hope of all Christians, in all ages of the church; it was the faith and hope of the Old Testament saints. All believers shall be gathered together to Christ, to be with him, and to be happy in his presence for ever. We should firmly believe the second coming of Christ; but there was danger lest the Thessalonians, being mistaken as to the time, should question the truth or certainty of the thing itself. False doctrines are like the winds that toss the water to and fro; and they unsettle the minds of men, which are as unstable as water. It is enough for us to know that our Lord will come, and will gather all his saints unto him. A reason why they should not expect the coming of Christ, as at hand, is given. There would be a general falling away first, such as would occasion the rise of antichrist, that man of sin. There have been great disputes who or what is intended by this man of sin and son of perdition. The man of sin not only practises wickedness, but also promotes and commands sin and wickedness in others; and is the son of perdition, because he is devoted to certain destruction, and is the instrument to destroy many others, both in soul and body. As God was in the temple of old, and worshipped there, and is in and with his church now; so the antichrist here mentioned, is a usurper of God's authority in the Christian church, who claims Divine honours.
