Matthew 12:34

O generation of vipers, how can ye say well, when ye yourselves are evil? For of the abundance of the heart, the mouth speaketh.

Luke 6:45

A good man out of the good treasure of his heart bringeth forth that which is good. And an evil man out of the evil treasure of his heart, bringeth forth that which is evil. For of the abundance of the heart, his mouth speaketh.

Matthew 23:33

ye serpents and generation of vipers, how should ye escape the damnation of hell?

Matthew 3:7

When he saw many of the Pharisees and of the Sadducees come to his baptism, he said unto them, "O generation of vipers, who hath taught you to flee from the vengeance to come?

Matthew 15:18

But those things which proceed out of the mouth come from the heart, and they defile the man.

James 3:5-8

even so the tongue is little member and boasteth great things. Behold how great a thing a little fire kindleth,

1 Samuel 24:13

According to the old proverb, wickedness shall proceed out of the wicked: But mine hand be not upon thee.

Isaiah 32:6

But the churl will be churlishly minded, and his heart will work evil and play the hypocrite, and imagine abominations against God, to make the hungry lean, and withhold drink from the thirsty.

Luke 3:7

Then said he to the people that were come to be baptised of him, "O generation of vipers: who hath taught you to fly away from the wrath to come?

Psalm 10:6-7

For he hath said in his heart, "Tush, I shall never be cast down; there shall no harm happen unto me."

Matthew 12:35

A good man out of the good treasure of his heart, bringeth forth good things. And an evil man out of his evil treasure, bringeth forth evil things.

John 8:44

Ye are of your father the devil, and the lusts of your father, ye will do. He was a murderer from the beginning; And abode not in the truth, because there is no truth in him. When he speaketh a lie, then speaketh he of his own. For he is a liar, and the father thereof.

Ephesians 4:29

Let no filthy communication proceed out of your mouths: but that which is good to edify withal, when need is, that it may have favour with the hearers.

Psalm 52:2-5

Thy tongue imagineth wickedness, and with lies it cutteth like a sharp razor.

Psalm 53:1

{To the Chanter, upon Mahalath, an instruction of David} The foolish bodies say in their hearts, "Tush, there is no God." Corrupt are they, and become abominable in their wickednesses, there is not one that doeth good.

Psalm 64:3

who have whet their tongue like a sword, and shoot out their arrows, even bitter words,

Psalm 64:5

They have devised mischief, and communed among themselves how they may lay snares. "Tush," say they, "Who shall see them?"

Psalm 120:2-4

Deliver my soul, O LORD, from lying lips, and from a deceitful tongue!

Psalm 140:2-3

which imagine mischief in their hearts, and stir up strife all the day long.

Isaiah 59:4

No man regardeth righteousness, and no man judgeth truly. Every man hopeth in vain things, and imagineth deceit; conceiveth weariness, and bringeth forth evil.

Isaiah 59:14

And therefore is equity gone aside, and righteousness standeth far off; truth is fallen down in the street, and the thing that is plain and open, may not be showed.

Jeremiah 7:2-5

"Stand under the gates of the LORD's house, and cry out these words there, with a loud voice, and say, Hear the word of the LORD all ye of Judah, that go in at this door, to honour the LORD.

Romans 3:10-14

as it is written, "There is none righteous, no not one:

1 John 3:10

And hereby are the sons of God known, and also the sons of the devil. All that work not righteousness, are not of God, nor he that loveth not his brother.

Treasury of Scripture Knowledge

Summary

O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh.

For

General references

Bible References

Generation

Matthew 3:7
When he saw many of the Pharisees and of the Sadducees come to his baptism, he said unto them, "O generation of vipers, who hath taught you to flee from the vengeance to come?
Matthew 23:33
ye serpents and generation of vipers, how should ye escape the damnation of hell?
Luke 3:7
Then said he to the people that were come to be baptised of him, "O generation of vipers: who hath taught you to fly away from the wrath to come?
John 8:44
Ye are of your father the devil, and the lusts of your father, ye will do. He was a murderer from the beginning; And abode not in the truth, because there is no truth in him. When he speaketh a lie, then speaketh he of his own. For he is a liar, and the father thereof.
1 John 3:10
And hereby are the sons of God known, and also the sons of the devil. All that work not righteousness, are not of God, nor he that loveth not his brother.

How

1 Samuel 24:13
According to the old proverb, wickedness shall proceed out of the wicked: But mine hand be not upon thee.
Psalm 10:6
For he hath said in his heart, "Tush, I shall never be cast down; there shall no harm happen unto me."
Psalm 52:2
Thy tongue imagineth wickedness, and with lies it cutteth like a sharp razor.
Psalm 53:1
{To the Chanter, upon Mahalath, an instruction of David} The foolish bodies say in their hearts, "Tush, there is no God." Corrupt are they, and become abominable in their wickednesses, there is not one that doeth good.
Psalm 64:3
who have whet their tongue like a sword, and shoot out their arrows, even bitter words,
Psalm 120:2
Deliver my soul, O LORD, from lying lips, and from a deceitful tongue!
Psalm 140:2
which imagine mischief in their hearts, and stir up strife all the day long.
Isaiah 32:6
But the churl will be churlishly minded, and his heart will work evil and play the hypocrite, and imagine abominations against God, to make the hungry lean, and withhold drink from the thirsty.
Isaiah 59:4
No man regardeth righteousness, and no man judgeth truly. Every man hopeth in vain things, and imagineth deceit; conceiveth weariness, and bringeth forth evil.
Jeremiah 7:2
"Stand under the gates of the LORD's house, and cry out these words there, with a loud voice, and say, Hear the word of the LORD all ye of Judah, that go in at this door, to honour the LORD.
Romans 3:10
as it is written, "There is none righteous, no not one:
James 3:5
even so the tongue is little member and boasteth great things. Behold how great a thing a little fire kindleth,

For

Luke 6:45
A good man out of the good treasure of his heart bringeth forth that which is good. And an evil man out of the evil treasure of his heart, bringeth forth that which is evil. For of the abundance of the heart, his mouth speaketh.

General references

Exodus 35:21
And they went - as many as their hearts couraged them and as many as their spirits made them willing - and brought heave offerings unto the LORD, to the making of the tabernacle of witness and for all his uses and for the holy vestments.
Matthew 15:18
But those things which proceed out of the mouth come from the heart, and they defile the man.
Mark 7:20
And he said, "That defileth a man which cometh out of a man.