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34. Offspring of vipers. The similarity between the tree and the fruit is here applied by Christ to nothing more than speech, because this afforded an opportunity of detecting the inward and concealed malice of the scribes; and that is the reason why he dwells so much on this one kind of sin. It is because their falsehood and slanders betrayed what was not so visible in the rest of their life, that Christ attacks them with such severity. “There is no reason to wonder,” he says, “that you vomit out wicked words; for your heart is full of malice.” Nor are we to suppose that he ought to have treated them with greater gentleness, because some might regard this reproof as excessively severe. There are other sins, no doubt, that call for harsh reproofs; but when hypocritical persons pervert what is right, or put a false coloring on what is sinful, such wickedness renders it necessary that God should thunder against it in a more terrible manner than against other sins.

Now the design of Christ, suggested by the present occurrence, was to condemn the wicked sophistry which turns light into darkness. This passage shows how highly valuable in the sight of the Lord truth is, since he maintains and defends it with such rigor. Would that this were earnestly considered by those persons, whose ingenuity is too ready to be employed in defending any cause, and whose venal tongue disguises impostures! In a particular manner, Christ waxes wroth against those whom ambition, or envy, or some other fraudulent design, prompts to slander, even when there is nothing that their conscience condemns. Against the Pharisees, too, as his custom was, Christ used greater harshness, because they were so captivated by an unfounded conviction of their righteousness, that an ordinary warning had no effect upon them. And till hypocrites are sharply pierced, ¹³⁶¹³⁶     “Iusques a ce qu’ils sentent qu’on le poigne a bon escient;” — “till they feel that they are pierced in good earnest.” all that is said to them is treated with scorn and contempt.

How can you speak what is good? We have formerly hinted, that proverbial sayings ought not to be rigidly interpreted as an invariable rule, for they state nothing more than the ordinary fact. Sometimes, no doubt, a cruel man will deceive the simple by honied flatteries, a cunning man will cheat under the garb of simplicity, and a man of very wicked thoughts will breathe almost angelical purity of language. ¹³⁷¹³⁷     “Il semblera, a l’ouir parler, qu’il ait une purete Angelique;” — “to hear him speak, you would imagine that he has the purity of an Angel.” But the ordinary practice demonstrates the truth of what Christ here says, that out of the abundance of the heart the mouth speaketh; agreeably to the old proverb, which declared the tongue to be the index of the mind. ¹³⁸¹³⁸     “Comme aussi le proverbe ancien portoit, Que la langue est le charactere ou pourtrait du coeur;” — “as also the old proverb bore, That the tongue is the type or portrait of the heart.” And, indeed, whatever hidden and crooked recesses may exist in the heart of man, and whatever may be the amazing contrivances by which every man conceals his vices, yet the Lord extorts from each of them some kind of confession, so that they discover by the tongue their natural disposition and hidden feelings. We must also observe the purpose for which Christ employs those parables; for he reproaches the Pharisees with having manifested by words the malice which they had inwardly conceived. Besides, knowing them to be sworn enemies, he takes occasion from, single calumny to expose their whole life, and to destroy their credit with the people, which gave them too great influence in deceiving and in doing mischief. Though good speeches do not always proceed from the inmost heart, but originate (as the phrase is) on the tip of the tongue, yet it is an invariable truth, that bad speeches are indications of a bad heart.

36. Of every idle word This is an argument from the less to the greater; for if every idle word is to be called in question, how would God spare the open blasphemies and sacrilegious insolence of those who bark against his glory? ¹³⁹¹³⁹     “Qui abbayent contre sa gloire, comme chiens mastins;” — “who bark against his glory, like mastiff-dogs.” An idle word means one that is useless, or that yields no edification or advantage. Many look upon this as too severe; ¹⁴⁰¹⁴⁰     “Ceci semble a plusieurs estre trop extreme et rigoureux;”— “this appears to many to be too extreme and rigorous.” but if we consider the purpose for which our tongues were made, we will acknowledge, that those men are justly held guilty who unthinkingly devote them to trifling fooleries, and prostitute them to such a purpose. It is no light fault to abuse, for frivolous purposes, the time, which Paul enjoins us to be careful to redeem, (Ephesians 5:16; Colossians 4:5.)

Now since no man is so cautious in speech, or maintains such a wise restraint upon himself, as never to allow some idle words to escape him, there remains for all of us absolute despair, if the Lord should treat us with rigor. But as the confident hope of our salvation rests on the assurance that God will not enter into judgment with us, (Psalm 143:2,) but will bury in gracious forgetfulness the sins which deserve innumerable deaths, ¹⁴¹¹⁴¹     “Qui meritent dix mille morts;” — “which deserve ten thousand deaths.” we entertain no doubt that, when he removes the condemnation of our whole life, he will likewise pardon the guilt of idle talking. When the judgment of God is mentioned in Scripture, it does not in any way set aside the forgiveness of sins. And yet let no man indulge himself, but let every man earnestly endeavor to bridle his tongue, (James 1:26.) First, let us speak of the sacred mysteries of God with the utmost reverence and sobriety; secondly, let us abstain from talkativeness, buffoonery, and vain jests, and much more from slanderous attacks; and, lastly, let us endeavor to have our speech seasoned with salt, (Colossians 4:6.)

37. By thy words thou shalt be justified This was a common proverb, which he applied to the present subject; for I have no doubt that this was a saying which the people had frequently in their mouths, that “every man is condemned or acquitted by his own acknowledgment.” But Christ turns it to a meaning somewhat different, that a wicked speech, being the indication of concealed malice, is enough to condemn a man. The attempt which the Papists make to torture this passage, so as to set aside the righteousness of faith, is childish. A man is justified by his words, not because his speech is the ground of his justification, (for we obtain by faith the favor of God, so that he reckons us to be righteous persons;) but because pure speech ¹⁴²¹⁴²     “La parole pure, droite, et honneste;” — “pure, upright, and becoming speech.” absolves us in such a manner, that we are not condemned as wicked persons by our tongue. Is it not absurd to infer from this, that men deserve a single drop of righteousness in the sight of God? On the contrary, this passage upholds our doctrine; for, although Christ does not here treat of the ground of our justification, yet the contrast between the two words points out the meaning of the word justify. The Papists reckon it absurd in us to say, that a man is justified by faith, because they explain the word justified to mean, that he becomes, and is, actually righteous; while we understand it to mean, that he is accounted righteous, and is acquitted before the tribunal of God, as is evident from numerous passages of Scripture. And is not the same thing confirmed by Christ, when he draws a contrast between justified and condemned?

Matthew 12:39. A wicked generation He does not merely charge that age with malice, but pronounces the Jews—or at least the scribes, and those who resembled them—to be a wicked nation; thus declaring that they labored under a hereditary disease of obstinacy. The word γενεά sometimes denotes an age, and sometimes a people or nation. He calls them adulterous, that is, spurious or illegitimate, ¹⁶⁵¹⁶⁵     “Il entend qu’ils sont enfans bastars;” — “he means that they are bastard children.” because they were degenerated from the holy fathers; as the prophets reproach the men of their age with being not the descendants of Abraham, but the ungodly seed of Canaan.

Seeks a sign. This leads to the inquiry, Does Christ address them with such harshness of language, because they wished to have a sign given them? for on other occasions God manifests that He is not so much displeased on this account. Gideon asks a sign, (Judges 6:17,) and God is not angry, but grants his request; and though Gideon becomes importunate and asks another sign, yet God condescends to his weakness. Hezekiah does not ask a sign, and it is offered to him, though unsolicited, (Isaiah 38:7,8.) Ahaz is severely blamed for refusing to ask a sign, as the prophet had enjoined him to do, (Isaiah 7:11.) It is not solely, therefore, because they ask a sign, that Christ makes this attack upon the scribes, but because they are ungrateful to God, wickedly despise so many of his wonderful works, and try to find a subterfuge for not obeying his word. What a display was this, I do not say of indifference, but of malice, in shutting their eyes against so many signs! There was, therefore, no proper ground for this annoyance; and they had no other object in view than to appear to have a good reason for rejecting Christ. Paul condemns their posterity for the same crime, when he says that the Jews require a sign, (1 Corinthians 1:22.)

A sign shall not be given to it. They had already been convicted by various miracles, and Christ does not abstain from exerting his power among them, for the purpose of rendering them inexcusable, but only means that one sign would stand for all, because they were unworthy of having their ungodly desire granted. “Let them rest satisfied,” says he, “with this sign, that as Jonah, brought up from the bottom of the sea, preached to the Ninevites, so they will hear the voice of a prophet risen from the dead.” The most of commentators, I am aware, display greater ingenuity in expounding this passage; but as the resemblance between Christ and Jonah does not hold at every point, we must inquire in what respect Christ compares himself to Jonah. For my own part, leaving the speculations of other men, I think that Christ intends to mark out that single point of resemblance which I have already hinted, that he will be their prophet after that he is risen from the dead. “You despise,” he says, “the Son of God, who has come down to you from heaven: but I am yet to die, and to rise from the grave, and to speak to you after my resurrection, as Jonah came from the bottom of the sea to Nineveh.” In this manner our Lord cuts off every pretense for their wicked demands, by threatening that he will be their Prophet after his resurrection, since they do not receive him while clothed with mortal flesh.