We have here a caution against false prophets, to take heed that we be not deceived and imposed upon by them. Prophets are properly such as foretel things to come; there are some mentioned in the Old Testament, who pretended to that without warrant, and the event disproved their pretensions, as Zedekiah, Kg1 22:11, and another Zedekiah, Jer 29:21. But prophets did also teach the people their duty, so that false prophets here are false teachers. Christ being a Prophet and a Teacher come from God, and designing to send abroad teachers under him, gives warning to all to take heed of counterfeits, who, instead of healing souls with wholesome doctrine, as they pretend, would poison them.

They are false teachers and false prophets, 1. Who produce false commissions, who pretend to have immediate warrant and direction from God to set up for prophets, and to be divinely inspired, when they are not so. Though their doctrine may be true, we are to beware of them as false prophets. False apostles are those who say they are apostles, and are not (Rev 2:2); such are false prophets. "Take heed of those who pretend to revelation, and admit them not without sufficient proof, lest that one absurdity being admitted, a thousand follow." 2. Who preach false doctrine in those things that are essential to religion; who teach that which is contrary to the truth as it is in Jesus, to the truth which is accordingly to godliness. The former seems to be the proper notion of pseudo-propheta, a false or pretending prophet, but commonly the latter falls in with it; for who would hang out false colours, but with design, under pretence of them, the more successfully to attack the truth. "Well, beware of them, suspect them, try them, and when you have discovered their falsehood, avoid them, have nothing to do with them. Stand upon your guard against this temptation, which commonly attends the days of reformation, and the breakings out of divine light in more than ordinary strength and splendour." When God's work is revived, Satan and his agents are most busy. Here is,

I.A good reason for this caution, Beware of them, for they are wolves in sheep's clothing, Mat 7:15.

1.We have need to be very cautious, because their pretences are very fair and plausible, and such as will deceive us, if we be not upon our guard. They come in sheep's clothing, in the habit of prophets, which was plain and coarse, and unwrought; they wear a rough garment to deceive, Zac 13:4. Elijah's mantle the Septuagint calls hē mēlotē - a sheep-skin mantle. We must take heed of being imposed upon by men's dress and garb, as by that of the scribes, who desire to walk in long robes, Luk 20:46. Or it may be taken figuratively; they pretend to be sheep, and outwardly appear so innocent, harmless, meek, useful, and all that is good, as to be excelled by none; they feign themselves to be just men, and for the sake of their clothing are admitted among the sheep, which gives them an opportunity of doing them a mischief ere they are aware. They and their errors are gilded with the specious pretences of sanctity and devotion. Satan turns himself into an angel of light, Co2 11:13, Co2 11:14. The enemy has horns like a lamb (Rev 13:11); faces of men, Rev 9:7, Rev 9:8. Seducers in language and carriage are soft as wool, Rom 16:18; Isa 30:10.

2.Because under these pretensions their designs are very malicious and mischievous; inwardly they are ravening wolves. Every hypocrite is a goat in sheep's clothing; not only not a sheep, but the worst enemy the sheep has, that comes not but to tear and devour, to scatter the sheep (Joh 10:12), to drive them from God, and from one another, into crooked paths. Those that would cheat us of any truth, and possess us with error, whatever they pretend, design mischief to our souls. Paul calls them grievous wolves, Act 20:29. They raven for themselves, serve their own belly (Rom 16:18), make a prey of you, make a gain of you. Now since it is so easy a thing, and withal so dangerous, to be cheated, Beware of false prophets.

II.Here is a good rule to go by in this caution; we must prove all things (Th1 5:21), try the spirits (Jo1 4:1), and here we have a touchstone; ye shall know them by their fruits, Mat 7:16-20. Observe,

1.The illustration of this comparison, of the fruit's being the discovery of the tree. You cannot always distinguish them by their bark and leaves, nor by the spreading of their boughs, but by their fruits ye shall know them. The fruit is according to the tree. Men may, in their professions, put a force upon their nature, and contradict their inward principles, but the stream and bent of their practices will agree with them. Christ insists upon this, the agreeableness between the fruit and the tree, which is such as that, (1.) If you know what the tree is, you may know what fruit to expect. Never look to gather grapes from thorns, nor figs from thistles; it is not in their nature to produce such fruits. An apple may be stuck, or a bunch of grapes may hang, upon a thorn; so may a good truth, a good word or action, be found in a bad man, but you may be sure it never grew there. Note, [1.] Corrupt, vicious, unsanctified hearts are like thorns and thistles, which came in with sin, are worthless, vexing, and for the fire at last. [2.] Good works are good fruit, like grapes and figs, pleasing to God and profitable to men. [3.] This good fruit is never to be expected from bad men, and more than a clean thing out of an unclean: they want an influencing acceptable principle. Out of an evil treasure will be brought forth evil things. (2.) On the other hand, if you know what the fruit is, you may, by that, perceive what the tree is. A good tree cannot bring forth evil fruit; and a corrupt tree cannot bring forth good fruit, nay, it cannot but bring forth evil fruit. But then that must be reckoned the fruit of the tree which it brings forth naturally and which is its genuine product - which it brings forth plentifully and constantly and which is its usual product. Men are known, not by particular acts, but by the course and tenour of their conversation, and by the more frequent acts, especially those that appear to be free, and most their own, and least under the influence of external motives and inducements.

2.The application of this to the false prophets.

(1)By way of terror and threatening (Mat 7:19); Every tree that brings not forth good fruit is hewn down. This very saying John the Baptist had used, Mat 3:10. Christ could have spoken the same sense in other words; could have altered it, or given it a new turn; but he thought it no disparagement to him to say the same that John had said before him; let not ministers be ambitious of coining new expressions, nor people's ears itch for novelties; to write and speak the same things must not be grievous, for it is safe. Here is, [1.] The description of barren trees; they are trees that do not bring forth good fruit; though there be fruit, if it be not good fruit (though that be done, which for the matter of it is good, if it be not done well, in a right manner, and for a right end), the tree is accounted barren. [2.] The doom of barren trees; they are, that is, certainly they shall be, hewn down, and cast into the fire; God will deal with them as men use to deal with dry trees that cumber the ground: he will mark them by some signal tokens of his displeasure, he will bark them by stripping them of their parts and gifts, and will cut them down by death, and cast them into the fire of hell, a fire blown with the bellows of God's wrath, and fed with the wood of barren trees. Compare this with Eze 31:12, Eze 31:13; Dan 4:14; Joh 15:6.

(2)By way of trial; By their fruits ye shall know them.

[1]By the fruits of their persons, their words and actions, and the course of their conversation. If you would know whether they be right or not, observe how they live; their works will testify for them or against them. The scribes and Pharisees sat in Moses's chair, and taught the law, but they were proud, and covetous, and false, and oppressive, and therefore Christ warned him disciples to beware of them and of their leaven, Mar 12:38. If men pretend to be prophets and are immoral, that disproves their pretensions; those are no true friends to the cross of Christ, whatever they profess, whose God is their belly, and whose mind earthly things, Phi 3:18, Phi 3:19. Those are not taught nor sent of the holy God, whose lives evidence that they are led by the unclean spirit. God puts the treasure into earthen vessels, but not into such corrupt vessels: they may declare God's statutes, but what have they to do to declare them?

[2]By the fruits of their doctrine; their fruits as prophets: not that this is the only way, but it is one way, of trying doctrines, whether they be of God or not. What do they tend to do? What affections and practices will they lead those into, that embrace them? If the doctrine be of God, it will tend to promote serious piety, humility, charity, holiness, and love, with other Christian graces; but if, on the contrary, the doctrines these prophets preach have a manifest tendency to make people proud, worldly, and contentious, to make them loose and careless in their conversations, unjust or uncharitable, factious or disturbers of the public peace; if it indulge carnal liberty, and take people off from governing themselves and their families by the strict rules of the narrow way, we may conclude, that this persuasion comes not of him that calleth us, Gal 5:8. This wisdom is from above, Jam 3:15. Faith and a good conscience are held together, Ti1 1:19; Ti1 3:9. Note, Doctrines of doubtful disputation must be tried by graces and duties of confessed certainty: those opinions come not from God that lead to sin: but if we cannot know them by their fruits, we must have recourse to the great touchstone, to the law, and to the testimony; do they speak according to that rule?

Many will say to me in that day, Lord, Lord,.... That is, in the last day, the day of judgment, the great and famous day, fixed by God, unknown to angels and men, which will be terrible to some, and joyful to others; the day in which the faithful ministers of the Gospel shall be owned by Christ, and received into the kingdom of heaven: "many", not of the common people only, but of the preachers of the word, who have filled up the highest station in the church below; not one, or two, or a few of them only, but many of them "will say to me"; to Christ, who will appear then as the judge of quick and dead, to which he is ordained by his Father,

Lord, Lord; not "my Lord, my Lord", as the Syriac version reads it; for they will not be able to claim any interest in him, though they will be obliged to own his dominion, power, and authority over them. The word is repeated to show their importunity, sense of danger, the confusion they will be in, the wretched disappointment they will have; and therefore speak as persons amazed and confounded, having expected they would have been the first persons that should be admitted into heaven. Their pleas follow;

have we not prophesied in thy name? This may be understood either of foretelling things to come; which gift wicked men may have, who have never had any experience of the grace of God, as Balaam, and Caiaphas, and others; or rather of preaching the word, which is sometimes called prophesying, Rom 12:6 and which may be done in the name of Christ, pretending mission and authority from him, and to be preachers of him, and yet be no better than "sounding brass", or "a tinkling cymbal"; yea, nothing at all as to true grace, or spiritual experience.

And in thy name have cast out devils? Diabolical possessions were very frequent in the times of Christ; no doubt but they were suffered, that Jesus might have an opportunity of showing his power over Satan, by dispossessing him from the bodies, as well as the souls of men; and of giving proof of his deity, divine sonship and Messiahship: and this power of casting out devils was given to others, not only to the twelve apostles, among whom Judas was, who had the same power with the rest, and to the seventy disciples; but even to some who did not follow him, and his disciples, Mar 9:38 and some did this in the name of Jesus, who do not appear to have any true faith in him, and knowledge of him; as the vagabond Jews, exorcists, and the seven sons of Sceva, Act 19:13. An awful consideration it is, that men should be able to cast out devils, and at last be cast to the devil.

And in thy name done many wonderful works? that is, many miracles; not one, or a few only, but many; such as speaking with tongues, removing mountains, treading on serpents and scorpions, and drinking any deadly thing without hurt, and healing all manner of diseases and sicknesses. Judas, for one, was capable of pleading all these things; he had the gift of preaching, and a call from Christ to it, and yet a castaway; he had the power of casting out devils, and yet could not prevent the devil from entering into him; he could perform miracles, do wonders in Christ's name, and yet, at last, was the betrayer of him. These pleas and arguments will be of no use to him, nor of any avail to any at the great day. It may be observed, that these men lay the whole stress of their salvation upon what they have done in Christ's name; and not on Christ himself, in whom there is salvation, and in no other: they say not a syllable of what Christ has done and suffered, but only of what they have done. Indeed, the things they instance in, are the greatest done among men; the gifts they had were the most excellent, excepting the grace of God; the works they did were of an extraordinary nature; whence it follows, that there can be no salvation, nor is it to be expected from men's works: for if preaching the word, which is attended with so much study, care, and labour, will not be a prevailing argument to admit men into the kingdom of heaven; how can it be thought that ever reading, or hearing, or any other external performance of religion, should bring persons thither?

Every tree that bringeth not forth good fruit is hewn down, and cast into the fire--(See on Mat 3:10).