Now, brothers, concerning the coming of our Lord Jesus Christ, and our gathering together to him, we ask you
      II. The thing itself against which the apostle cautions the Thessalonians is that they should not be deceived about the time of Christ's coming, and so be shaken in mind, or be troubled. Note, Errors in the mind tend greatly to weaken our faith, and cause us trouble; and such as are weak in faith and of troubled minds are oftentimes apt to be deceived, and fall a prey to seducers. 1. The apostle would not have them be deceived: Let no man deceive you by any means,2 Thessalonians 2:3; 2 Thessalonians 2:3. There are many who lie in wait to deceive, and they have many ways of deceiving; we have reason therefore to be cautious and stand upon our guard. Some deceivers will pretend new revelations, others misinterpret scripture, and others will be guilty of gross forgeries; divers means and artifices of deceit men will use; but we must be careful that no man deceive us by any means. The particular matter in which the apostle cautions them not to be deceived is about the near approach of Christ's coming, as if it was to have been in the apostle's days; and harmless as this error might seem to many, yet, because it was indeed an error, it would have proved of bad consequences to many persons. Therefore, 2. He gives them warning, and would not have them be soon shaken in mind, nor be troubled. (1.) He would not have their faith weakened. We should firmly believe the second coming of Christ, and be settled and established in the faith of this; but there was danger lest the Thessalonians, if they apprehended the coming of Christ was just at hand, upon finding that they, or others whom they too much regarded, were mistaken as to the time, should thereupon question the truth or certainty of the thing itself; whereas they ought not to waver in their minds as to this great thing, which is the faith and hope of all the saints. False doctrines are like winds, that toss the water to and fro, and they are apt to unsettle the minds of men, who are sometimes as unstable as water. Then, (2.) He would not have their comforts lessened, that they should not be troubled nor affrighted with false alarms. It is probable that the coming of Christ was represented in so much terror as to trouble many serious Christians among them, though in itself it should be matter of the believer's hope and joy; or else many might be troubled with the thought how surprising this day would be, or with the fear of their unpreparedness, or upon the reflection on their mistake about the time of Christ's coming: we should always watch and pray, but must not be discouraged nor uncomfortable at the thought of Christ's coming.