And Jesus answering said to them. They received an answer very different from what they had expected; for whereas they were eager for a triumph, as if they had already finished their warfare, Christ exhorts them to long patience. As if he had said, "You wish to seize the prize at the very outset, but you must first finish the course. You would draw down to earth the kingdom of God, which no man can obtain till he ascend to heaven." Now while this chapter contains admonitions highly useful for regulating the course of our life, we see that, by a wonderful purpose of God, the mistake into which the apostles fell is made to turn to our advantage. The amount of the present instruction is, that the preaching of the Gospel is like sowing the seed, and therefore we ought to wait patiently for the time of reaping; and that it arises from improper delicacy or effeminacy, if we lose courage on account of the frost, or snow, or clouds of winter or other unpleasant seasons. Take heed lest any man deceive you. There are two charges which Christ expressly gives to the disciples, to beware of false teachers, and not to be terrified by scandals. By these words he gives warning that his Church, so long as its pilgrimage in the world shall last, will be exposed to these evils. But they might be apt to think that this was inconsistent, since the prophets gave a widely different description of the future reign of Christ. Isaiah predicts that all will then be taught of God, (54:13.) The words of God are: I will pour out my Spirit on all flesh; and your sons and your daughters shall prophesy; your young men shall see visions, and your old men shall dream dreams, (Joel 2:28.) A still more abundant light of understanding is promised by Jeremiah. No longer shall any man teach his neighbor, nor a man his brother, saying, Know the Lord; for all shall know me from the least to the greatest, (Jeremiah 31:34.) And, therefore, we need not wonder if the Jews expected, that when the Sun of righteousness had arisen, as Malachi (4:2) had predicted, they would be entirely free from every cloud of error. Hence, also, the woman of Samaria said, When the Messiah cometh, he will teach us all things, (John 4:25.) Now we know what splendid promises of peace, righteousness, joy, and abundance of all blessings, are to be found everywhere in Scripture. We need not, therefore, wonder if they expected that, at the coming of Christ, they would be delivered from commotions of war, from extortions and every kind of injustice, and, in short, from famine and pestilence. But Christ warns them, that false teachers will henceforth give no less annoyance to the godly than false prophets gave to the ancient people; and that disturbances will be not less frequent under the Gospel than they formerly were under the Law. Not that those prophecies which I have just mentioned will fail to be accomplished, but because the full accomplishment of them does not immediately appear in one day; for it is enough that believers now obtain a taste of those blessings, so as to cherish the hope of the full enjoyment of them at a future period. And, therefore, they were greatly mistaken, who wished to hay at the commencement of the Gospel, an immediate and perfect exhibition of those things which we see accomplished from day to day. Besides, that happiness which the prophets ascribe to the reign of Christ, though it cannot be altogether annihilated by the depravity of man, is retarded or delayed by it. It is true that the Lord, in contending with the malice of men, opens up a way for his blessings through every obstacle; and, indeed, it would be unreasonable to suppose that what is founded on the undeserved goodness of God, and does not depend on the will of man, should be set aside through their fault. Yet, that they may receive some punishment for their ingratitude he drops upon them in small measure his favors, which would otherwise flow on them in the richest abundance. Hence arises a labyrinth of evils, through which believers wander all their life, though they are pursuing the straight road to salvation, having Christ for their guide, who holds out to them the torch of his Gospel. Hence arises a multitude of combats, so that they have a hard warfare, though there is no danger of their being vanquished. Hence arise disturbances so numerous and so sudden, that they are kept in perpetual uneasiness, though, resting on Christ, they remain firm to the end. And since Christ enjoins his disciples to beware of impostures, let us know that the means of defense will not be wanting, provided that they are not wanting to themselves. [1] And therefore, whatever arts Satan may employ, let us entertain no doubt that we shall be safe from them, if every one of us keep diligent watch on his own station.

Footnotes

1 - "Pourveu qu'ils soyent songneux à en user;" -- "provided that they are careful to use them."

Take heed - Jesus, in reply to their question, first gives them a caution to beware of deception. They were to be constantly on their guard, because many would arise to deceive the people.
Many shall come in my name - Not in the name or by the authority of Jesus, or claiming to be His followers, and to be sent by him, but in the name of the Messiah, or claiming to be the Messiah.
I am Christ - I am the Messiah. See the notes at Matthew 1:1. The Messiah was expected at that time, Matthew 2:1-2. Many would lay, claims to being the Messiah, and, as He was universally expected, multitudes would easily be led to believe in them. There is abundant evidence that this was fully accomplished. Josephus informs us that there were many who pretended to divine inspiration; who deceived the people, leading out numbers of them into the desert. "The land," says He "was overrun with magicians, seducers, and impostors, who drew the people after them in multitudes into solitudes and deserts, to see I the signs and miracles which they promised to show by the power of God." Among these are mentioned particularly Dositheus, the Samaritan, who affirmed that He was Christ; Simon Magus, who said He appeared among the Jews as the Son of God; and Theudas, who persuaded many to go with him to the river Jordan, to see the waters divided. The names of 24 false Messiahs are recorded as having appeared between the time of the Emperor Adrian and the year 1682.

Take heed that no man deceive you - The world is full of deceivers, and it is only by taking heed to the counsel of Christ that even his followers can escape being ruined by them. From this to Matthew 24:31, our Lord mentions the signs which should precede his coming.
The First sign is false Christs.

(2) And Jesus answered and said unto them, Take heed that no man deceive you.
(2) The Church will have a continual conflict with infinite miseries and offences, and furthermore, with false prophets, until the day of victory and triumph comes.

And Jesus answered and said unto them,.... Not to indulge their curiosity, but to instruct them in things useful to be known, and which might be cautions to them and others, against deceivers; confirm them in the faith of himself, when they should see his predictions accomplished; and be directions to them, of what might shortly be expected.
Take heed that no man deceive you: by pretending to come from God with a new revelation, setting himself up for the Messiah, after my departure; suggesting himself to be the person designed by God to be the deliverer of Israel, and to be sent by him, to set up a temporal kingdom, in great worldly splendour and glory; promising great names, and high places of honour and trust in it; things which Christ knew his disciples were fond of, and were in danger of being ensnared by; and therefore gives them this suitable and seasonable advice, and caution.

The disciples had asked concerning the times, When these things should be? Christ gave them no answer to that; but they had also asked, What shall be the sign? This question he answers fully. The prophecy first respects events near at hand, the destruction of Jerusalem, the end of the Jewish church and state, the calling of the Gentiles, and the setting up of Christ's kingdom in the world; but it also looks to the general judgment; and toward the close, points more particularly to the latter. What Christ here said to his disciples, tended more to promote caution than to satisfy their curiosity; more to prepare them for the events that should happen, than to give a distinct idea of the events. This is that good understanding of the times which all should covet, thence to infer what Israel ought to do. Our Saviour cautions his disciples to stand on their guard against false teachers. And he foretells wars and great commotions among nations. From the time that the Jews rejected Christ, and he left their house desolate, the sword never departed from them. See what comes of refusing the gospel. Those who will not hear the messengers of peace, shall be made to hear the messengers of war. But where the heart is fixed, trusting in God, it is kept in peace, and is not afraid. It is against the mind of Christ, that his people should have troubled hearts, even in troublous times. When we looked forward to the eternity of misery that is before the obstinate refusers of Christ and his gospel, we may truly say, The greatest earthly judgments are but the beginning of sorrows. It is comforting that some shall endure even to the end. Our Lord foretells the preaching of the gospel in all the world. The end of the world shall not be till the gospel has done its work. Christ foretells the ruin coming upon the people of the Jews; and what he said here, would be of use to his disciples, for their conduct and for their comfort. If God opens a door of escape, we ought to make our escape, otherwise we do not trust God, but tempt him. It becomes Christ's disciples, in times of public trouble, to be much in prayer: that is never out of season, but in a special manner seasonable when we are distressed on every side. Though we must take what God sends, yet we may pray against sufferings; and it is very trying to a good man, to be taken by any work of necessity from the solemn service and worship of God on the sabbath day. But here is one word of comfort, that for the elect's sake these days shall be made shorter than their enemies designed, who would have cut all off, if God, who used these foes to serve his own purpose, had not set bounds to their wrath. Christ foretells the rapid spreading of the gospel in the world. It is plainly seen as the lightning. Christ preached his gospel openly. The Romans were like an eagle, and the ensign of their armies was an eagle. When a people, by their sin, make themselves as loathsome carcasses, nothing can be expected but that God should send enemies to destroy them. It is very applicable to the day of judgment, the coming of our Lord Jesus Christ in that day, 2-Thessalonians 2:1. Let us give diligence to make our calling and election sure; then may we know that no enemy or deceiver shall ever prevail against us.

Take heed that no man deceive you. By pretending to be Christ. As they yet believed that Christ would surely return to reign at Jerusalem, this admonition was needed.
Come in my name. As the Messiah. We learn from Josephus that enthusiasts did come about the time of the end of Jerusalem, claiming to be sent of God. Bar-cocheba, "the son of the star," appeared in A. D. 120. From time to time other deceivers have appeared.

Take heed that no man deceive you - The caution is more particularly designed for the succeeding Christians, whom the apostles then represented. The first sign of my coming is, the rise of false prophets. But it is highly probable, many of these things refer to more important events, which are yet to come.