Romans 3:13

THE MESSAGE

Parallel Translations

Christian Standard Bible®
Their throat is an open grave;they deceive with their tongues.Vipers’ venom is under their lips.

King James Version (1611)
Their throat is an open sepulchre, with their tongues they haue vsed deceit, the poyson of Aspes is vnder their lippes:

King James Version
Their throat is an open sepulchre; with their tongues they have used deceit; the poison of asps is under their lips:

English Standard Version
"Their throat is an open grave; they use their tongues to deceive." "The venom of asps is under their lips."

New American Standard Bible
"THEIR THROAT IS AN OPEN GRAVE, WITH THEIR TONGUES THEY KEEP DECEIVING," "THE VENOM OF ASPS IS UNDER THEIR LIPS";

New Century Version
"Their throats are like open graves; they use their tongues for telling lies." Psalm 5:9 "Their words are like snake poison." Psalm 140:3

Amplified Bible
"THEIR THROAT IS AN OPEN GRAVE; THEY [habitually] DECEIVE WITH THEIR TONGUES." "THE VENOM OF ASPS IS BENEATH THEIR LIPS."

New American Standard Bible (1995)
"THEIR THROAT IS AN OPEN GRAVE, WITH THEIR TONGUES THEY KEEP DECEIVING," "THE POISON OF ASPS IS UNDER THEIR LIPS";

Legacy Standard Bible
"Their throat is an open tomb,With their tongues they keep deceiving,""The poison of asps is under their lips";

Berean Standard Bible
Their throats are open graves; their tongues practice deceit. The venom of vipers is on their lips.

Contemporary English Version
Their words are like an open pit, and their tongues are good only for telling lies. Each word is as deadly as the fangs of a snake,

Complete Jewish Bible
"Their throats are open graves, they use their tongues to deceive. Vipers' venom is under their lips.

Darby Translation
their throat is an open sepulchre; with their tongues they have used deceit; asps' poison [is] under their lips:

Easy-to-Read Version
"Their words come from mouths that are like open graves. They use their lying tongues to deceive others." "Their words are like the poison of snakes."

Geneva Bible (1587)
Their throte is an open sepulchre: they haue vsed their tongues to deceit: the poyson of aspes is vnder their lippes.

George Lamsa Translation
Their throats are like open sepulchres; their tongues are deceitful; the venom of asps is under their lips.

Good News Translation
Their words are full of deadly deceit; wicked lies roll off their tongues, and dangerous threats, like snake's poison, from their lips;

Lexham English Bible
Their throat is an opened grave; they deceive with their tongues; the venom of asps is under their lips,

Literal Translation
"Their throat is a tomb being opened;" "they used deceit with their tongues; the poison of asps is under their lips;

American Standard Version
Their throat is an open sepulchre; With their tongues they have used deceit: The poison of asps is under their lips:

Bible in Basic English
Their throat is like an open place of death; with their tongues they have said what is not true: the poison of snakes is under their lips:

Hebrew Names Version
"Their throat is an open tomb. With their tongues they have used deceit." "The poison of vipers is under their lips;"

International Standard Version
Their throats are open graves.Psalm 5:9; 140:3; Jeremiah 5:16;">[xr] With their tongues they practice deception.Psalm 5:9">[fn] The venom of poisonous snakes is under their lips.Psalm 140:3">[fn]

Etheridge Translation
Open sepulchres are their throats, Their tongues have deceived, And the venom of asps is under their lips.

Murdock Translation
Their throats are open sepulchres, and their tongues treacherous; and the venom of the asp is under their lips.

Bishop's Bible (1568)
Their throte is an open sepulchre, with their tongues they haue deceaued, the poyso of aspes is vnder their lippes.

English Revised Version
Their throat is an open sepulchre; With their tongues they have used deceit: The poison of asps is under their lips:

World English Bible
"Their throat is an open tomb. With their tongues they have used deceit." "The poison of vipers is under their lips;"

Wesley's New Testament (1755)
Their throat is an open sepulchre; with their tongues have they used deceit; the poison of asps is under their lips.

Weymouth's New Testament
"Their throats resemble an opened grave; with their tongues they have been talking deceitfully." "The venom of vipers lies hidden behind their lips."

Wycliffe Bible (1395)
The throte of hem is an opyn sepulcre; with her tungis thei diden gilefuli; the venym of snakis is vndur her lippis.

Update Bible Version
Their throat is an open tomb; With their tongues they have used deceit: The poison of asps is under their lips:

Webster's Bible Translation
Their throat [is] an open sepulcher; with their tongues they have used deceit; the poison of asps [is] under their lips:

New English Translation
" Their throats are open graves , they deceive with their tongues , the poison of asps is under their lips ."

New King James Version
"Their throat is an open tomb;With their tongues they have practiced deceit"; Psalms 5:9 ">[fn] "The poison of asps is under their lips"; Psalms 140:3 ">[fn]

New Living Translation
"Their talk is foul, like the stench from an open grave. Their tongues are filled with lies." "Snake venom drips from their lips."

New Life Bible
Their mouth is like an open grave. They tell lies with their tongues. Whatever they say is like the poison of snakes.

New Revised Standard
"Their throats are opened graves; they use their tongues to deceive." "The venom of vipers is under their lips."

J.B. Rotherham Emphasized Bible
A sepulchre opened, is their throat, with their tongues, have they used deceit, the poison of asps, is under their lips,

Douay-Rheims Bible
Their throat is an open sepulchre: with their tongues they have dealt deceitfully. The venom of asps is under their lips.

Revised Standard Version
"Their throat is an open grave, they use their tongues to deceive." "The venom of asps is under their lips."

Tyndale New Testament (1525)
Their throte is an open sepulchre with their tounges they have disceaved: the poyson of Aspes is vnder their lippes.

Young's Literal Translation
A sepulchre opened [is] their throat; with their tongues they used deceit; poison of asps [is] under their lips.

Miles Coverdale Bible (1535)
Their throte is an open sepulcre, with their tunges they haue disceaued, the poyson off Aspes is vnder their lippes.

Mace New Testament (1729)
their throat is an open sepulchre; with their tongues they have used deceit; the poison of asps is under their lips:

Simplified Cowboy Version
Gross things come from their mouth, like the smell from a rotting corpse. Their tongues are addicted to lies. Venom slips from their lips.

Contextual Overview

¹So what difference does it make who's a Jew and who isn't, who has been trained in God's ways and who hasn't? As it turns out, it makes a lot of difference—but not the difference so many have assumed. First, there's the matter of being put in charge of writing down and caring for God's revelation, these Holy Scriptures. So, what if, in the course of doing that, some of those Jews abandoned their post? God didn't abandon them. Do you think their faithlessness cancels out his faithfulness? Not on your life! Depend on it: God keeps his word even when the whole world is lying through its teeth. Scripture says the same: Your words stand fast and true; Rejection doesn't faze you. But if our wrongdoing only underlines and confirms God's rightdoing, shouldn't we be commended for helping out? Since our bad words don't even make a dent in his good words, isn't it wrong of God to back us to the wall and hold us to our word? These questions come up. The answer to such questions is no, a most emphatic No! How else would things ever get straightened out if God didn't do the straightening? It's simply perverse to say, "If my lies serve to show off God's truth all the more gloriously, why blame me? I'm doing God a favor." Some people are actually trying to put such words in our mouths, claiming that we go around saying, "The more evil we do, the more good God does, so let's just do it!" That's pure slander, as I'm sure you'll agree. So where does that put us? Do we Jews get a better break than the others? Not really. Basically, all of us, whether insiders or outsiders, start out in identical conditions, which is to say that we all start out as sinners. Scripture leaves no doubt about it: There's nobody living right, not even one, nobody who knows the score, nobody alert for God. They've all taken the wrong turn; they've all wandered down blind alleys. No one's living right; I can't find a single one. Their throats are gaping graves, their tongues slick as mudslides. Every word they speak is tinged with poison. They open their mouths and pollute the air. They race for the honor of sinner-of-the-year, litter the land with heartbreak and ruin, Don't know the first thing about living with others. They never give God the time of day. This makes it clear, doesn't it, that whatever is written in these Scriptures is not what God says about others but to us to whom these Scriptures were addressed in the first place! And it's clear enough, isn't it, that we're sinners, every one of us, in the same sinking boat with everybody else? Our involvement with God's revelation doesn't put us right with God. What it does is force us to face our complicity in everyone else's sin. But in our time something new has been added. What Moses and the prophets witnessed to all those years has happened. The God-setting-things-right that we read about has become Jesus-setting-things-right for us. And not only for us, but for everyone who believes in him. For there is no difference between us and them in this. Since we've compiled this long and sorry record as sinners (both us and them) and proved that we are utterly incapable of living the glorious lives God wills for us, God did it for us. Out of sheer generosity he put us in right standing with himself. A pure gift. He got us out of the mess we're in and restored us to where he always wanted us to be. And he did it by means of Jesus Christ. God sacrificed Jesus on the altar of the world to clear that world of sin. Having faith in him sets us in the clear. God decided on this course of action in full view of the public—to set the world in the clear with himself through the sacrifice of Jesus, finally taking care of the sins he had so patiently endured. This is not only clear, but it's now—this is current history! God sets things right. He also makes it possible for us to live in his rightness. So where does that leave our proud Jewish insider claims and counterclaims? Canceled? Yes, canceled. What we've learned is this: God does not respond to what we do; we respond to what God does. We've finally figured it out. Our lives get in step with God and all others by letting him set the pace, not by proudly or anxiously trying to run the parade. And where does that leave our proud Jewish claim of having a corner on God? Also canceled. God is the God of outsider non-Jews as well as insider Jews. How could it be otherwise since there is only one God? God sets right all who welcome his action and enter into it, both those who follow our religious system and those who have never heard of our religion. ³ But by shifting our focus from what we do to what God does, don't we cancel out all our careful keeping of the rules and ways God commanded? Not at all. What happens, in fact, is that by putting that entire way of life in its proper place, we confirm it. ⁴ So what difference does it make who's a Jew and who isn't, who has been trained in God's ways and who hasn't? As it turns out, it makes a lot of difference—but not the difference so many have assumed. First, there's the matter of being put in charge of writing down and caring for God's revelation, these Holy Scriptures. So, what if, in the course of doing that, some of those Jews abandoned their post? God didn't abandon them. Do you think their faithlessness cancels out his faithfulness? Not on your life! Depend on it: God keeps his word even when the whole world is lying through its teeth. Scripture says the same: Your words stand fast and true; Rejection doesn't faze you. But if our wrongdoing only underlines and confirms God's rightdoing, shouldn't we be commended for helping out? Since our bad words don't even make a dent in his good words, isn't it wrong of God to back us to the wall and hold us to our word? These questions come up. The answer to such questions is no, a most emphatic No! How else would things ever get straightened out if God didn't do the straightening? It's simply perverse to say, "If my lies serve to show off God's truth all the more gloriously, why blame me? I'm doing God a favor." Some people are actually trying to put such words in our mouths, claiming that we go around saying, "The more evil we do, the more good God does, so let's just do it!" That's pure slander, as I'm sure you'll agree. So where does that put us? Do we Jews get a better break than the others? Not really. Basically, all of us, whether insiders or outsiders, start out in identical conditions, which is to say that we all start out as sinners. Scripture leaves no doubt about it: There's nobody living right, not even one, nobody who knows the score, nobody alert for God. They've all taken the wrong turn; they've all wandered down blind alleys. No one's living right; I can't find a single one. Their throats are gaping graves, their tongues slick as mudslides. Every word they speak is tinged with poison. They open their mouths and pollute the air. They race for the honor of sinner-of-the-year, litter the land with heartbreak and ruin, Don't know the first thing about living with others. They never give God the time of day. This makes it clear, doesn't it, that whatever is written in these Scriptures is not what God says about others but to us to whom these Scriptures were addressed in the first place! And it's clear enough, isn't it, that we're sinners, every one of us, in the same sinking boat with everybody else? Our involvement with God's revelation doesn't put us right with God. What it does is force us to face our complicity in everyone else's sin. But in our time something new has been added. What Moses and the prophets witnessed to all those years has happened. The God-setting-things-right that we read about has become Jesus-setting-things-right for us. And not only for us, but for everyone who believes in him. For there is no difference between us and them in this. Since we've compiled this long and sorry record as sinners (both us and them) and proved that we are utterly incapable of living the glorious lives God wills for us, God did it for us. Out of sheer generosity he put us in right standing with himself. A pure gift. He got us out of the mess we're in and restored us to where he always wanted us to be. And he did it by means of Jesus Christ. God sacrificed Jesus on the altar of the world to clear that world of sin. Having faith in him sets us in the clear. God decided on this course of action in full view of the public—to set the world in the clear with himself through the sacrifice of Jesus, finally taking care of the sins he had so patiently endured. This is not only clear, but it's now—this is current history! God sets things right. He also makes it possible for us to live in his rightness. So where does that leave our proud Jewish insider claims and counterclaims? Canceled? Yes, canceled. What we've learned is this: God does not respond to what we do; we respond to what God does. We've finally figured it out. Our lives get in step with God and all others by letting him set the pace, not by proudly or anxiously trying to run the parade. And where does that leave our proud Jewish claim of having a corner on God? Also canceled. God is the God of outsider non-Jews as well as insider Jews. How could it be otherwise since there is only one God? God sets right all who welcome his action and enter into it, both those who follow our religious system and those who have never heard of our religion. But by shifting our focus from what we do to what God does, don't we cancel out all our careful keeping of the rules and ways God commanded? Not at all. What happens, in fact, is that by putting that entire way of life in its proper place, we confirm it. ⁵ So what difference does it make who's a Jew and who isn't, who has been trained in God's ways and who hasn't? As it turns out, it makes a lot of difference—but not the difference so many have assumed. First, there's the matter of being put in charge of writing down and caring for God's revelation, these Holy Scriptures. So, what if, in the course of doing that, some of those Jews abandoned their post? God didn't abandon them. Do you think their faithlessness cancels out his faithfulness? Not on your life! Depend on it: God keeps his word even when the whole world is lying through its teeth. Scripture says the same: Your words stand fast and true; Rejection doesn't faze you. But if our wrongdoing only underlines and confirms God's rightdoing, shouldn't we be commended for helping out? Since our bad words don't even make a dent in his good words, isn't it wrong of God to back us to the wall and hold us to our word? These questions come up. The answer to such questions is no, a most emphatic No! How else would things ever get straightened out if God didn't do the straightening? It's simply perverse to say, "If my lies serve to show off God's truth all the more gloriously, why blame me? I'm doing God a favor." Some people are actually trying to put such words in our mouths, claiming that we go around saying, "The more evil we do, the more good God does, so let's just do it!" That's pure slander, as I'm sure you'll agree. So where does that put us? Do we Jews get a better break than the others? Not really. Basically, all of us, whether insiders or outsiders, start out in identical conditions, which is to say that we all start out as sinners. Scripture leaves no doubt about it: There's nobody living right, not even one, nobody who knows the score, nobody alert for God. They've all taken the wrong turn; they've all wandered down blind alleys. No one's living right; I can't find a single one. Their throats are gaping graves, their tongues slick as mudslides. Every word they speak is tinged with poison. They open their mouths and pollute the air. They race for the honor of sinner-of-the-year, litter the land with heartbreak and ruin, Don't know the first thing about living with others. They never give God the time of day. This makes it clear, doesn't it, that whatever is written in these Scriptures is not what God says about others but to us to whom these Scriptures were addressed in the first place! And it's clear enough, isn't it, that we're sinners, every one of us, in the same sinking boat with everybody else? Our involvement with God's revelation doesn't put us right with God. What it does is force us to face our complicity in everyone else's sin. But in our time something new has been added. What Moses and the prophets witnessed to all those years has happened. The God-setting-things-right that we read about has become Jesus-setting-things-right for us. And not only for us, but for everyone who believes in him. For there is no difference between us and them in this. Since we've compiled this long and sorry record as sinners (both us and them) and proved that we are utterly incapable of living the glorious lives God wills for us, God did it for us. Out of sheer generosity he put us in right standing with himself. A pure gift. He got us out of the mess we're in and restored us to where he always wanted us to be. And he did it by means of Jesus Christ. God sacrificed Jesus on the altar of the world to clear that world of sin. Having faith in him sets us in the clear. God decided on this course of action in full view of the public—to set the world in the clear with himself through the sacrifice of Jesus, finally taking care of the sins he had so patiently endured. This is not only clear, but it's now—this is current history! God sets things right. He also makes it possible for us to live in his rightness. So where does that leave our proud Jewish insider claims and counterclaims? Canceled? Yes, canceled. What we've learned is this: God does not respond to what we do; we respond to what God does. We've finally figured it out. Our lives get in step with God and all others by letting him set the pace, not by proudly or anxiously trying to run the parade. And where does that leave our proud Jewish claim of having a corner on God? Also canceled. God is the God of outsider non-Jews as well as insider Jews. How could it be otherwise since there is only one God? God sets right all who welcome his action and enter into it, both those who follow our religious system and those who have never heard of our religion. But by shifting our focus from what we do to what God does, don't we cancel out all our careful keeping of the rules and ways God commanded? Not at all. What happens, in fact, is that by putting that entire way of life in its proper place, we confirm it. ⁶ So what difference does it make who's a Jew and who isn't, who has been trained in God's ways and who hasn't? As it turns out, it makes a lot of difference—but not the difference so many have assumed. First, there's the matter of being put in charge of writing down and caring for God's revelation, these Holy Scriptures. So, what if, in the course of doing that, some of those Jews abandoned their post? God didn't abandon them. Do you think their faithlessness cancels out his faithfulness? Not on your life! Depend on it: God keeps his word even when the whole world is lying through its teeth. Scripture says the same: Your words stand fast and true; Rejection doesn't faze you. But if our wrongdoing only underlines and confirms God's rightdoing, shouldn't we be commended for helping out? Since our bad words don't even make a dent in his good words, isn't it wrong of God to back us to the wall and hold us to our word? These questions come up. The answer to such questions is no, a most emphatic No! How else would things ever get straightened out if God didn't do the straightening? ⁷It's simply perverse to say, "If my lies serve to show off God's truth all the more gloriously, why blame me? I'm doing God a favor." Some people are actually trying to put such words in our mouths, claiming that we go around saying, "The more evil we do, the more good God does, so let's just do it!" That's pure slander, as I'm sure you'll agree. ⁹So where does that put us? Do we Jews get a better break than the others? Not really. Basically, all of us, whether insiders or outsiders, start out in identical conditions, which is to say that we all start out as sinners. Scripture leaves no doubt about it: There's nobody living right, not even one, nobody who knows the score, nobody alert for God. They've all taken the wrong turn; they've all wandered down blind alleys. No one's living right; I can't find a single one. Their throats are gaping graves, their tongues slick as mudslides. Every word they speak is tinged with poison. They open their mouths and pollute the air. They race for the honor of sinner-of-the-year, litter the land with heartbreak and ruin, Don't know the first thing about living with others. They never give God the time of day. This makes it clear, doesn't it, that whatever is written in these Scriptures is not what God says about others but to us to whom these Scriptures were addressed in the first place! And it's clear enough, isn't it, that we're sinners, every one of us, in the same sinking boat with everybody else? Our involvement with God's revelation doesn't put us right with God. What it does is force us to face our complicity in everyone else's sin.

Bible Verse Review
  from Treasury of Scripure Knowledge

throat: Psalms 5:9, Jeremiah 5:16, Matthew 23:27, Matthew 23:28

with their: Romans 3:4, Psalms 5:9, Psalms 12:3, Psalms 12:4, Psalms 36:3, Psalms 52:2, Psalms 57:4, Isaiah 59:3, Jeremiah 9:3-5, Ezekiel 13:7, Matthew 12:34, Matthew 12:35, James 3:5-8

the poison: Deuteronomy 32:33, Job 20:14-16, Psalms 140:3

Reciprocal: Genesis 3:15 - enmity Leviticus 11:13 - the eagle 1 Kings 20:7 - seeketh mischief Job 20:16 - the poison Psalms 10:7 - and deceit Psalms 50:19 - tongue Psalms 58:4 - poison Psalms 91:13 - adder Proverbs 1:12 - as the Micah 6:12 - spoken Matthew 15:11 - but Luke 6:45 - and an Ephesians 4:29 - no 1 Timothy 3:8 - doubletongued James 3:6 - a world James 3:8 - full Revelation 13:6 - he opened

Cross-References

Genesis 3:4
The serpent told the Woman, "You won't die. God knows that the moment you eat from that tree, you'll see what's really going on. You'll be just like God, knowing everything, ranging all the way from good to evil."

Genesis 3:6
When the Woman saw that the tree looked like good eating and realized what she would get out of it—she'd know everything!—she took and ate the fruit and then gave some to her husband, and he ate.

Genesis 3:9
God called to the Man: "Where are you?"

Genesis 3:10
He said, "I heard you in the garden and I was afraid because I was naked. And I hid."

Genesis 3:12
The Man said, "The Woman you gave me as a companion, she gave me fruit from the tree, and, yes, I ate it." God said to the Woman, "What is this that you've done?"

Genesis 44:15
Joseph accused them: "How can you have done this? You have to know that a man in my position would have discovered this."

1 Samuel 13:11
Samuel said, "What on earth are you doing?" Saul answered, "When I saw I was losing my army from under me, and that you hadn't come when you said you would, and that the Philistines were poised at Micmash, I said, ‘The Philistines are about to come down on me in Gilgal, and I haven't yet come before God asking for his help.' So I took things into my own hands, and sacrificed the burnt offering."

2 Samuel 3:24
Joab went straight to the king: "What's this you've done? Abner shows up, and you let him walk away scot-free? You know Abner son of Ner better than that. This was no friendly visit. He was here to spy on you, figure out your comings and goings, find out what you're up to."

John 18:35
Pilate said, "Do I look like a Jew? Your people and your high priests turned you over to me. What did you do?"

Gill's Notes on the Bible

Their throat is an open sepulchre,.... The several vices of the instruments of speech are here, and in the following verse, exposed: "the throat" is said to "be an open sepulchre", as in Psalms 5:9, so called, for its voracity and insatiableness; both as an instrument of speech, for the words of the wicked are devouring ones; and as an instrument of swallowing, and so may denote the sinner's eager desire after sin, the delight and pleasure he takes in it, the abundance of it he takes in, and his insatiable greediness for it; likewise for its filthy stench, the communication of evil men being corrupt; and because, as by an open grave, persons may fall unawares to their hurt, so the evil communications of wicked men, as they corrupt good manners, are dangerous and hurtful: R. Aben Ezra explains it by

אסון מיד, "immediate destruction", or sudden death:

with their tongues they have used deceit; which may design the sin of flattery, for the words in Psalms 5:9; the place referred to, are, "they flatter with their tongue"; either God or men, themselves or others, their princes or their neighbour; for there are flatterers in things sacred and civil, there are self-flatterers, court flatterers, and flattering preachers, and all abominable and mischievous; or the phrase may design the sin of lying, either politically, officiously, perniciously, and religiously; and in this latter way, either with respect to doctrine or practice:

the poison of asps is under their lips; or as in Psalms 140:3, "adders' poison is under their lips". The asp is but a small creature, and so is the tongue, James 3:5, but there is a world of mischief in it, signified by poison; which, as that, is latent and secret, is under it; and as that stupefies and kills insensibly, so an evil tongue does, and that in a deadly and incurable manner: oftentimes the Jews speak of the evil imagination, or corruption of nature entering into persons, and operating in them, כארס בכעוס "as poison in an angry serpent" w.

w T. Bab. Sabbat, fol. 62. 2. Yoma, fol. 9. 2.

Barnes' Notes on the Bible

Their throat ... - This expression is taken from Psalms 5:9, literally from the Septuagint. The design of the psalm is to reprove those who were false, traitorous, slanderous, etc. Psalms 5:6. The psalmist has the sin of deceit, and falsehood, and slander particularly in his eye. The expressions here are to be interpreted in accordance with that. The sentiment here may be, as the grave is ever open to receive all into it, that is, into destruction, so the mouth or the throat of the slanderer is ever open to swallow up the peace and happiness of all. Or it may mean, as from an open sepulchre there proceeds an offensive and pestilential vapor, so from the mouths of slanderous persons there proceed noisome and ruinous words. “(Stuart.)” I think the connection demands the former interpretation.

With their tongues ... - In their conversation, their promises, etc., they have been false, treacherous, and unfaithful.

The poison of asps - This is taken literally from the Septuagint of Psalms 140:3. The asp, or adder, is a species of serpent whose poison is of such active operation that it kills almost the instant that it penetrates, and that without remedy. It is small, and commonly lies concealed, often in the “sand” in a road, and strikes the traveler before he sees it. It is found chiefly in Egypt and Lybia. It is said by ancient writers that the celebrated Cleopatra, rather than be carried a captive to Rome by Augustus, suffered an asp to bite her in the arm, by which she soon died. The precise species of serpent which is here meant by the psalmist, however, cannot be ascertained. All that is necessary to understand the passage is, that it refers to a serpent whose bite was deadly, and rapid in its execution.

Is under their lips - The poison of the serpent is contained in a small bag which is concealed at the root of the tooth. When the tooth is struck into the flesh, the poison is pressed out, through a small hole in the tooth, into the wound. Whether the psalmist was acquainted with that fact, or referred to it, cannot be known: his words do not of necessity imply it. The sentiment is, that as the poison of the asp is rapid, certain, spreading quickly through the system, and producing death; so the words of the slanderer are deadly, pestiferous, quickly destroying the reputation and happiness of man. They are as subtle, as insinuating, and as deadly to the reputation, as the poison of the adder is to the body. Wicked people in the Bible are often compared to serpents; Matthew 23:33; Genesis 49:17.

Clarke's Notes on the Bible

Verse Romans 3:13. Their throat is an open sepulchre — This and all the following verses to the end of the 18th Romans 3:13-18 are found in the Septuagint, but not in the Hebrew text; and it is most evident that it was from this version that the apostle quoted, as the verses cannot be found in any other place with so near an approximation to the apostle's meaning and words. The verses in question, however, are not found in the Alexandrian MS. But they exist in the Vulgate, the AEthiopic, and the Arabic. As the most ancient copies of the Septuagint do not contain these verses, some contend that the apostle has quoted them from different parts of Scripture; and later transcribers of the Septuagint, finding that the 10th, 11th, and 12th, verses were quoted from the xivth Psalm, Psalms 14:3 imagined that the rest were found originally there too, and so incorporated them in their copies, from the apostle's text.

Their throat is an open sepulchre-By their malicious and wicked words they bury, as it were, the reputation of all men. The whole of this verse appears to belong to their habit of lying, defamation, slandering, &c., by which they wounded, blasted, and poisoned the reputation of others.