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.

2. soon—on trifling grounds, without due consideration.

shaken—literally, "tossed" as ships tossed by an agitated sea. Compare for the same image, Eph 4:14.

in mind—rather as the Greek, "from your mind," that is, from your mental steadfastness on the subject.

troubled—This verb applies to emotional agitation; as "shaken" to intellectual.

by spirit—by a person professing to have the spirit of prophecy (1Co 12:8-10; 1Jo 4:1-3). The Thessalonians had been warned (1Th 5:20, 21) to "prove" such professed prophesyings, and to "hold fast (only) that which is good."

by word—of mouth (compare 2Th 2:5, 15); some word or saying alleged to be that of Paul, orally communicated. If oral tradition was liable to such perversion in the apostolic age (compare a similar instance, Joh 21:23), how much more in our age!

by letter as from us—purporting to be from us, whereas it is a forgery. Hence he gives a test by which to know his genuine letters (2Th 3:17).

day of Christ—The oldest manuscripts read, "day of the Lord."

is at hand—rather, "is immediately imminent," literally, "is present"; "is instantly coming." Christ and His apostles always taught that the day of the Lord's coming is at hand; and it is not likely that Paul would imply anything contrary here; what he denies is, that it is so immediately imminent, instant, or present, as to justify the neglect of everyday worldly duties. Chrysostom, and after him Alford, translates, "is (already) present" (compare 2Ti 2:18), a kindred error. But in 2Ti 3:1, the same Greek verb is translated "come." Wahl supports this view. The Greek is usually used of actual presence; but is quite susceptible of the translation, "is all but present."