Psalm 140:3

Their tongues are sharp like the tongue of a snake; the poison of snakes is under their lips. (Selah.)

Psalm 58:4

Their poison is like the poison of a snake; they are like the adder, whose ears are shut;

Psalm 57:4

My soul is among lions; I am stretched out among those who are on fire, even the sons of men, whose teeth are spears and arrows, and whose tongue is a sharp sword.

Genesis 3:13

And the Lord God said to the woman, What have you done? And the woman said, I was tricked by the deceit of the snake and I took it.

Psalm 52:2-3

Purposing destruction, using deceit; your tongue is like a sharp blade.

Psalm 59:7

See, hate is dropping from their lips; curses are on their tongues: they say, Who gives attention to it?

Psalm 64:3-4

Who make their tongues sharp like a sword, and whose arrows are pointed, even bitter words;

Proverbs 12:18

There are some whose uncontrolled talk is like the wounds of a sword, but the tongue of the wise makes one well again.

Proverbs 23:32

In the end, its bite is like that of a snake, its wound like the wound of a poison-snake.

Isaiah 59:3-5

For your hands are unclean with blood, and your fingers with sin; your lips have said false things, and your tongue gives out deceit.

Isaiah 59:13

We have gone against the Lord, and been false to him, turning away from our God, our words have been uncontrolled, and in our hearts are thoughts of deceit.

Jeremiah 9:3

Their tongues are bent like a bow to send out false words: they have become strong in the land, but not for good faith: they go on from evil to evil, and they have no knowledge of me, says the Lord.

Jeremiah 9:5

Everyone will make sport of his neighbour with deceit, not saying what is true: their tongues have been trained to say false words; they are twisted, hating to come back.

Matthew 12:34

You offspring of snakes, how are you, being evil, able to say good things? because out of the heart's store come the words of the mouth.

Romans 3:13-14

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:

2 Corinthians 11:3

But I have a fear, that in some way, as Eve was tricked by the deceit of the snake, your minds may be turned away from their simple and holy love for Christ.

James 3:6-8

And the tongue is a fire; it is the power of evil placed in our bodies, making all the body unclean, putting the wheel of life on fire, and getting its fire from hell.

Treasury of Scripture Knowledge

Summary

They have sharpened their tongues like a serpent; adders' poison is under their lips. Selah.

General references

Bible References

Sharpened

Psalm 52:2
Purposing destruction, using deceit; your tongue is like a sharp blade.
Psalm 57:4
My soul is among lions; I am stretched out among those who are on fire, even the sons of men, whose teeth are spears and arrows, and whose tongue is a sharp sword.
Psalm 59:7
See, hate is dropping from their lips; curses are on their tongues: they say, Who gives attention to it?
Psalm 64:3
Who make their tongues sharp like a sword, and whose arrows are pointed, even bitter words;
Proverbs 12:18
There are some whose uncontrolled talk is like the wounds of a sword, but the tongue of the wise makes one well again.
Isaiah 59:3
For your hands are unclean with blood, and your fingers with sin; your lips have said false things, and your tongue gives out deceit.
Jeremiah 9:3
Their tongues are bent like a bow to send out false words: they have become strong in the land, but not for good faith: they go on from evil to evil, and they have no knowledge of me, says the Lord.
James 3:6
And the tongue is a fire; it is the power of evil placed in our bodies, making all the body unclean, putting the wheel of life on fire, and getting its fire from hell.

Like a serpent

Genesis 3:13
And the Lord God said to the woman, What have you done? And the woman said, I was tricked by the deceit of the snake and I took it.
Proverbs 23:32
In the end, its bite is like that of a snake, its wound like the wound of a poison-snake.
Matthew 12:34
You offspring of snakes, how are you, being evil, able to say good things? because out of the heart's store come the words of the mouth.
2 Corinthians 11:3
But I have a fear, that in some way, as Eve was tricked by the deceit of the snake, your minds may be turned away from their simple and holy love for Christ.

Adders

Psalm 58:4
Their poison is like the poison of a snake; they are like the adder, whose ears are shut;
Romans 3:13
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:

General references

Proverbs 25:18
One who gives false witness against his neighbour is a hammer and a sword and a sharp arrow.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain