Verses 21, 22. - And then if any man shall say unto you, Lo, here is the Christ; or, Lo, there, believe it not; for there shall arise false Christs and false prophets. Josephus mentions one Simon of Gerasa, who, pretending to be a deliverer of the people from the Romans, gathered around him a crowd of followers, and gained admission into Jerusalem, and harassed the Jews. In like manner, Eleazar and John, leaders of the Zealots, gained admission into the holy place, under pretense of defending the city, but really that they might plunder it. But it seems as though our Lord here. looked beyond the siege of Jerusalem to the end of the world; and he warns us that as the time of his second advent approaches, deceivers will arise, to seduce, if it were possible, even the elect. The word "to seduce" (ἀποπλανᾶν) is more properly rendered, as in the Revised Version, to lead astray. Every age has produced its crop of such deceivers; and it may be expected that, as the time of the end draws nearer and nearer, their number will increase. Sometimes those idiosyncrasies in them which show themselves in lying wonders, are the result of self-delusion; but still oftener they are deliberate attempts made for the purpose of imposing on the unwary. Sometimes they are a combination of both. In the cases to which our Lord refers there is evidently an intention to lead astray, although it may have had its origin in self-deceit. In our day there is a sad tendency to lead men astray with regard to the great fundamental verities of Christianity. And the words of St. Jerome may well be remembered here: "If any would persuade you that Christ is to be found in the wilderness of unbelief or sceptical philosophy, or in the secret chambers of heresy, believe them not."

13:14-23 The Jews in rebelling against the Romans, and in persecuting the Christians, hastened their own ruin apace. Here we have a prediction of that ruin which came upon them within less than forty years after this. Such destruction and desolation, that the like cannot be found in any history. Promises of power to persevere, and cautions against falling away, well agree with each other. But the more we consider these things, the more we shall see abundant cause to flee without delay for refuge to Christ, and to renounce every earthly object, for the salvation of our souls.And then if any man shall say to you,.... During those days of tribulation and affliction, or when shortened and at an end:

lo! here is Christ, or lo! he is there; the Messiah has appeared in such or in such a place, to deliver you from your national distresses and calamities, and from the Roman yoke and bondage:

believe him not; give no credit to such a report, for the reason following; See Gill on Matthew 24:23.