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What does the Bible say about a lying tongue?

What Christian writers said, from about AD 96 to 1930.

97 passages · 24 writers · 11 centuries

The short answer

Of the 97 passages here, 65 state a position on the lying tongue, lying lips, or false witness, and 32 mention them in passing, usually in a gloss on a verse. Matthew Henry (36 passages), Augustine of Hippo (19), and John Calvin (11) supply most of them, and the 24 writers range from Clement of Rome (about AD 96) to A. T. Robertson (1930). The 65 statements come from 17 writers, the earliest of them Cyprian (c. AD 246 to 258). They cite the commandments and verses against lying, apply the ninth commandment to harm done to a neighbor, read the lying tongue as speech that does not match the heart, describe lying as a habit learned by practice, and cite the verse that the mouth that lies slays the soul. Augustine rejects lying for any purpose, while John Cassian calls it permissible only as a last resort.

Lying forbidden and its gravity

14 passages · 7 writers · 200s to 1900s

Writers cite commandments and verses forbidding lying and speak of how serious the sin is.

c. 246–258

That we must not lie. “Lying lips are an abomination to the Lord.”

Cyprian of Carthage, The Treatises of Cyprian 12.4.106

375–380

Thou shall not be double-minded nor double-tongued; for “a man’s own lips are a strong snare to him,” and “a talkative person shall not be prospered upon earth.” Thy words shall not be vain; for “ye shall give an account of every idle word.” Thou shalt not tell lies: for says He, “Thou shalt destroy all those that speak lies.”

Anonymous (ANF), Constitutions of the Holy Apostles 8.1

c. 425–429

A question whether it can be without sin that our knowledge affords to weak brethren an opportunity for lying. Germanus : As far as the force of the words which have been reasonably and carefully considered, is concerned, our scruple about our promise would have easily been removed from us were it not that we were terribly alarmed lest by this example an opportunity for lying might be offered to certain weaker brethren, if they knew that the faith of an agreement could be in any way lawfully broken, whereas this very thing is forbidden in such vigorous and threatening terms by the prophet when he says: “Thou shalt destroy all those who utter a lie;” and: “the mouth that speaketh a lie, shall slay the soul.”

John Cassian, The Conferences of John Cassian. Part II. Containing Conferences XI-XVII 8.15

1839

What is forbidden by the ninth commandment? False witness against our neighbor, and all lying. … False witness out of court, when men slander any one behind his back, or blame him to his face unjustly.

Philaret of Moscow, The Longer Catechism of the Orthodox, Catholic, Eastern Church q. 597–601

False witness and harm to the neighbor

12 passages · 4 writers · 300s to 1700s

Writers apply the ninth commandment and the verses on lying lips to harm done to a neighbor.

c. 303–313

For if false witness by falsehood is injurious to him against whom it is spoken, and deceives him in whose presence it is spoken, we must therefore never speak falsely, because falsehood always deceives or injures. Therefore he is not a just man who, even without inflicting injury, speaks in idle discourse.

Lactantius, The Divine Institutes 8.60

1529

In the third place, what concerns us all, this commandment forbids all sins of the tongue whereby we may injure or approach too closely to our neighbor. For to bear false witness is nothing else than a work of the tongue. Now, whatever is done with the tongue against a fellow-man God would have prohibited, whether it be false preachers with their doctrine and blasphemy, false judges and witnesses with their verdict, or outside of court by lying and evil-speaking.

Martin Luther, Luther's Large Catechism 8.18

1529

Thou shalt not bear false witness against thy neighbor. … Therefore God wishes the reputation, good name, and upright character of our neighbor to be taken away or diminished as little as his money and possessions, that every one may stand in his integrity before wife, children, servants, and neighbors. And in the first place, we take the plainest meaning of this commandment according to the words (Thou shalt not bear false witness), as pertaining to the public courts of justice, where a poor innocent man is accused and oppressed by false witnesses in order to be punished in his body, property, or honor.

Martin Luther, Luther's Large Catechism 17.1

Tongue and heart: hypocrisy, flattery, double-heartedness

9 passages · 3 writers · 300s to 1700s

Writers read lying tongues as speech that does not match the heart.

c. 386–430

What is deceit? When one thing is done, another pretended. Deceitful lips are not a single heart; and because not a single heart, therefore “in a heart and a heart;” therefore “in a heart” twice, because the heart is double.

Augustine of Hippo, Sermons on Selected Lessons of the New Testament 85

1540–1564

David in this verse sets forth that part of unrighteousness which is contrary to truth. He says that there is no sincerity or uprightness in their speech, because the great object upon which they are bent is to deceive. He next describes the manner in which they deceive, namely, that every man endeavors to ensnare his neighbor by flattery He also points out the fountain and first cause of this, They speak with a double heart. This doubleness of heart, as I may term it, makes men double and variable in their speech, in order thereby to disguise themselves in different ways, or to make themselves appear to others different from what they really are.

John Calvin, Commentary on the Psalms, Vol. 1 12.1

1710

Men cannot discover the falsehood of flatterers, nor humble the haughtiness of those that speak proud things; but the righteous God will cut off all flattering lips, that give the traitor's kiss and speak words softer then oil when war is in the heart; he will pluck out the tongue that speaks proud things against God and religion, v. 3 . Some translate it as a prayer, "May God cut off those false and spiteful lips." Let lying lips be put to silence.

Matthew Henry, Commentary on Psalms 12.1

What counts as a lie

9 passages · 5 writers · 300s to 1800s

Writers define lying and separate kinds, including slander, flattery, half-truth, and a lie of the heart.

395

But, like as it is asked of what mouth the Scripture saith, “The mouth that lieth, slayeth the soul,” so it may be asked, of what lie. For it seems to speak of that lie in particular, which consists in detraction. It says, “Keep yourselves from murmuring, which profiteth nothing, and from detraction refrain your tongue.” Now this detraction takes place through malevolence, when any man not only with mouth and voice of the body doth utter what he forgeth against any, but even without speaking wisheth him to be thought such; which is in truth to detract with the mouth of the heart; which thing, it saith, cannot be obscure and hidden from God.

Augustine of Hippo, On Lying 33

1540–1564

“to utter a lie from the heart,” is far worse than to tell lies thoughtlessly, or even to deceive when an occasion presents itself.

John Calvin, Commentary on Isaiah, Vol. 4 59.1

1692

Eph 4:25. Lying is when one speaks that for truth which he knows to be false. A liar is most opposite to the God of truth. There are, as Augustine says, two sorts of lies. An officious lie, when a man tells a lie for his profit; as, when a tradesman says his commodity cost him so much, when perhaps it did not cost him half so much. He that will lie in his trade shall lie in hell. A jesting lie, when a man tells a lie in sport, to make others merry, and goes laughing to hell.

Thomas Watson, A Body of Divinity 3.10

1710

There are two sorts of lies equally detestable:—1. … 2. A flattering lie, which secretly works the ruin of those it is spoken to. In the former the mischief is plain, and men guard against it as well as they can, but in this it is little suspected, and men betray themselves by being credulous of their own praises and the compliments that are passed upon them. A wise man therefore will be more afraid of a flatterer that kisses and kills than of a slanderer that proclaims war.

Matthew Henry, Commentary on Proverbs 26.19

1834–1885

Is there iniquity in my tongue? - This is a solemn appeal to their consciences, and their own deep conviction that he was sincere. Iniquity in the tongue means falsehood, deceit, hypocrisy - that which would be expressed by the tongue.

Albert Barnes, Notes on the Bible Job 6:30

The soul and God's judgment

13 passages · 5 writers · 300s to 1800s

Writers cite verses on the lying mouth slaying the soul and on God's judgment, and discuss what follows for liars.

c. 392–406

Cleanse thy tongue from falsehood, because “a mouth which tells lies destroys the soul”: cleanse it from detraction, from swearing, and from perjury. … But often call to mind the following words, “See that no one render evil for evil to any man, or cursing for cursing, but on the contrary, do ye bless them, because to this ye have been called, that ye should possess a blessing by inheritance”; and this other passage, “If any one offend not in tongue, he is a perfect man.”

Sulpitius Severus, The Doubtful Letters of Sulpitius Severus 2.10

395

For that death which men are foolishly afraid of who are not afraid to sin, kills not the soul but the body, as the Lord teacheth in the Gospel; whence He charges us not to fear that death: but the mouth which lies kills not the body but the soul. For in these words it is most plainly written, “The mouth that lieth slayeth the soul.”

Augustine of Hippo, On Lying 9

1714

It is to no purpose to dissemble, for, sooner or later, truth will come out; and a lying tongue is but for a moment. If you speak in darkness that which is unbecoming you, and is inconsistent with your public professions, it shall be heard in the light; some way or other it shall be discovered, a bird of the air shall carry the voice ( Eccl. x. 20 ), and your folly and falsehood will be made manifest. " The iniquity that is concealed with a show of piety will be discovered, perhaps in this world, as Judas's was, and Simon Magus's, at furthest in the great day, when the secrets of all hearts shall be made manifest, Eccl. xii. 14; Rom. ii. 16 .

Matthew Henry, Commentary on Luke 12.1

1834–1885

But the mouth of them that speak lies - All who have sworn falsely; all who have professed allegiance and have proved unfaithful; all those who, contrary to their oaths and their obligations, have been found in the rebellion. They shall not be permitted to exult or rejoice, but they shall be confounded and silenced.

Albert Barnes, Notes on the Bible Psalms 63:11

Habit, labor, and origin of lying

8 passages · 6 writers · 300s to 1700s

Writers describe lying as a learned habit, a labor, a sin of youth, or a trait that comes from the devil.

590–604

But, on the other hand, the insincere are to be admonished to learn how heavy is the labour of duplicity, which with guilt they endure. For, while they are afraid of being found out, they are ever seeking dishonest defences, they are agitated by fearful suspicions. But there is nothing safer for defence than sincerity, nothing easier to say than truth. … Hence it is said through Jeremiah, They have taught their tongue to speak lies, and weary themselves to commit iniquity ( Jerem. ix. 5 ): as if it were said plainly, They who might have been friends of truth without labour, labour to sin; and, while they refuse to live in simplicity, by labours require that they should die.

Gregory the Great, The Book of Pastoral Rule, and Selected Epistles, of Gregory the Great 4.4.12

1674

Lying is such a sin, which the depravation of nature in youth is prone to exert itself by, and that on sundry reasons, not now to be inquired into: “They go astray from the womb, speaking lies.” The first inducement of our nature unto sin was by a lie, and we fell in Adam by giving credit thereunto; and there is in every sin a particular lie.

John Owen, Pneumatologia 3.6

1749

So, lying is mentioned as part of the character of all natural men, Psal. lviii. 3, 4. (there called wicked men, as in Psal. 1.) “The wicked are estranged from the womb; they go astray as soon as they be born, speaking lies: their poison is like the poison of a serpent,” &c. … “They have sharpened their tongues as a serpent; adders’ poison is under their lips;” which the same apostle, in the same place, also cites as what is said of all natural men.

Jonathan Edwards, Inquiry Concerning Qualification for Communion 5

Passing mentions

Lying lips and the lying tongue cited in a verse

4 passages · 2 writers · 1600s to 1700s

Writers quote or gloss verses on lying lips, the lying tongue, or the lying mouth, with little comment.

1609

In a word, we are like the Paphlagonian partridge, which has two hearts; for we have a very tender, pitiful, easy heart towards ourselves, and one which is hard, harsh and strict towards our neighbour. We have two scales, one wherein to measure our own goods to the best advantage, and the other to weigh our neighbours’ to the worst. Holy Scripture tells us that lying lips are an abomination unto the Lord, Prov. xii. 22. and the double heart, with one measure whereby to receive, and another to give, is also abominable in His Sight.

Francis de Sales, Introduction to the Devout Life 3.36

Smooth speech and lip-service against the heart

12 passages · 7 writers · 1st c. to 1800s

Writers treat the lying tongue as flattery, false profession, or deceptive friendly speech.

96

Let us cleave, therefore, to those who cultivate peace with godliness, and not to those who hypocritically profess to desire it. … And again it saith, “They loved Him with their mouth, and lied to Him with their tongue; but their heart was not right with Him, neither were they faithful in His covenant.” “Let the deceitful lips become silent,” [and “let the Lord destroy all the lying lips, ] and the boastful tongue of those who have said, Let us magnify our tongue; our lips are our own; who is lord over us?

Clement of Rome, First Epistle to the Corinthians 2.15

1120–1153

See, my son, that you are not taken with lying lips and a deceitful tongue.

Bernard of Clairvaux, Some Letters of Saint Bernard 46

1749

And it is certain, this was the case with them in the wilderness; they there professed that respect to God which they had not; as is evident by Psal. lxxviii. 36, 37. “They did flatter him with their mouth, and they lied unto him with their tongues; for their heart was not right with him, neither were they stedfast in his covenant.” In owning the covenant with God, they professed their heart was right with him, because it is mentioned as an evidence of their having lied or dealt falsely in their profession, that their heart was not right with him, and so proved not stedfast in God’s covenant, which they had owned.

Jonathan Edwards, Inquiry Concerning Qualification for Communion 5

1858

There never will be lacking those, who from selfish or sinister motives will profess with their lips to love Christ, while in heart they deny Him. There will always be some, who "by good words and fair speeches," will attempt to deceive the heart of the simple. The union of "burning lips and a wicked heart," is far from uncommon. There are probably few congregations which do not contain some of those whom Solomon likens to "potsherds, covered with silver dross." (Rom. 16:18. Prov. 26:23.)

J.C. Ryle, Expository Thoughts on Luke Luke 20:20-26

Lying as a mark of fallen nature

3 passages · 2 writers · 1700s

Writers cite verses on speaking lies from the womb as evidence of inborn sin.

1710

Falsehood. They soon learn to speak lies, and bend their tongues, like their bows, for that purpose, Jer. ix. 3 . How soon will little children tell a lie to excuse a fault, or in their own commendation! No sooner can they speak than they speak to God's dishonour; tongue-sins are some of the first of our actual transgressions.

Matthew Henry, Commentary on Psalms 58.1

1725

See what we are all by nature more or less: we are children of disobedience: not only disobedient children, but under the power of sin and naturally prone to disobey. The wicked are estranged from the womb; they go astray as soon as they are born, speaking lies, Ps. lviii. 3 . And, being children of disobedience, we are children of wrath, Eph. ii. 3 .

Matthew Henry, Commentary on Colossians 3.2

1758

And as mankind are represented in Scripture, as being of a wicked heart from their youth, so in other places they are spoken of as being thus from the womb. Psal. lviii. 3. “The wicked are estranged from the womb: they go astray as soon as they be born, speaking lies.” It is observable, that the psalmist mentions this as what belongs to the wicked, as the SONS OF MEN: for, these are the preceding words; “Do ye judge uprightly, O ye sons of men?

Jonathan Edwards, Original Sin Defended 4

Harm from false tongues and judgment on liars

10 passages · 5 writers · 400s to 1800s

Writers note the damage done by lies, slander, and false witness and the fate of those who tell them.

1869–1873

When other means of carrying on his warfare fail, he stirs up his servants to smite with the tongue. Grievous indeed are the sufferings which the saints of God have had to endure from the tongue in every age. Their characters have been slandered. Evil reports have been circulated about them. Lying stories have been diligently invented, and greedily swallowed, about their conduct. No wonder that David said, "Deliver my soul, O Lord, from lying lips, and from a deceitful tongue."

J.C. Ryle, Expository Thoughts on John John 8:48-59

1871

A false witness is as destructive to reputation, as such weapons to the body (Pr 24:28). beareth … witness—literally, "answereth questions," as before a judge, against his neighbor. 19. Treachery annoys as well as deceives.

Robert Jamieson, A.R. Fausset, and David Brown, Commentary Critical and Explanatory on the Whole Bible Proverbs 25

Lying set beside other sins, and examples

3 passages · 3 writers · 300s

Writers place lying among other vices or use it in examples and arguments.

c. 329–373

Now those who meditate evil we say, [think] not truth, but falsehood and not righteousness, but iniquity, for their tongue learns to speak lies. They have done evil, and have not ceased that they might repent. For, persevering with delight in wicked actions, they hasten thereto without turning back, even treading under foot the commandment with regard to neighbours, and, instead of loving them, devise evil against them, as the saint testifies, saying, ‘And those who seek me evil have spoken vanity, and imagined deceit all the day .’

Athanasius of Alexandria, Letters of Athanasius with Two Ancient Chronicles of His Life 3.3.9

c. 386–430

Give them also those guards at the Tomb, let them recount what they have seen, let them take money and lie too. …They too were added to the lie of the enemies: increased was the number of liars, that increased might be the reward of believers. Therefore they lied, “in the multitude of Thy power” they lied: to confound liars Thou hast appeared to men of truth, and Thou hast appeared to those men of truth whom Thou hast made men of truth.

Augustine of Hippo, Expositions on the Book of Psalms 66

c. 389–391

Why did He go straightway not to theft, but to false witness, passing over that commandment? Because he that steals, doth upon occasion swear also; but he that knows not either swearing or speaking falsehood, much less will he choose to steal. So that by this He hath overthrown the other sin likewise: since falsehood comes of stealing. But what means, “Thou shalt perform unto the Lord thine oaths?” It is this, “thou shalt be true in swearing.”

John Chrysostom, The Homilies of St. John Chrysostom 20