Wherefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Ghost shall not be forgiven unto men.(Matthew 12:31)

And whosoever speaketh a word against the Son of man, it shall be forgiven him: but whosoever speaketh against the Holy Ghost, it shall not be forgiven him, neither in this world, neither in the world to come.(Matthew 12:32)

Either make the tree good, and his fruit good; or else make the tree corrupt, and his fruit corrupt: for the tree is known by his fruit.(Matthew 12:33)

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

A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things.(Matthew 12:35)

But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.(Matthew 12:36)

For by thy words thou shalt be justified, and by thy words thou shalt be condemned.(Matthew 12:37)

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Matthew 12:34 - Cross Reference

The tongue deviseth mischiefs; like a sharp razor, working deceitfully. (Psalm 52:2)

For the vile person will speak villany, and his heart will work iniquity, to practise hypocrisy, and to utter error against the LORD, to make empty the soul of the hungry, and he will cause the drink of the thirsty to fail. (Isaiah 32:6)

Which imagine mischiefs in their heart; continually are they gathered together for war. (Psalm 140:2)

Stand in the gate of the LORD's house, and proclaim there this word, and say, Hear the word of the LORD, all ye of Judah, that enter in at these gates to worship the LORD. (Jeremiah 7:2)

Ye serpents, ye generation of vipers, how can ye escape the damnation of hell? (Matthew 23:33)

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, he speaketh of his own: for he is a liar, and the father of it. (John 8:44)

But those things which proceed out of the mouth come forth from the heart; and they defile the man. (Matthew 15:18)

A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things. (Matthew 12:35)

As saith the proverb of the ancients, Wickedness proceedeth from the wicked: but mine hand shall not be upon thee. (1 Samuel 24:13)

Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers. (Ephesians 4:29)

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. (Luke 6:45)

Who whet their tongue like a sword, and bend their bows to shoot their arrows, even bitter words: (Psalm 64:3)

The fool hath said in his heart, There is no God. Corrupt are they, and have done abominable iniquity: there is none that doeth good. (Psalm 53:1)

Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth! (James 3:5)

As it is written, There is none righteous, no, not one: (Romans 3:10)

But when he saw many of the Pharisees and Sadducees come to his baptism, he said unto them, O generation of vipers, who hath warned you to flee from the wrath to come? (Matthew 3:7)

Deliver my soul, O LORD, from lying lips, and from a deceitful tongue. (Psalm 120:2)

Then said he to the multitude that came forth to be baptized of him, O generation of vipers, who hath warned you to flee from the wrath to come? (Luke 3:7)

None calleth for justice, nor any pleadeth for truth: they trust in vanity, and speak lies; they conceive mischief, and bring forth iniquity. (Isaiah 59:4)

They encourage themselves in an evil matter: they commune of laying snares privily; they say, Who shall see them? (Psalm 64:5)

He hath said in his heart, I shall not be moved: for I shall never be in adversity. (Psalm 10:6)

In this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither he that loveth not his brother. (1 John 3:10)

And judgment is turned away backward, and justice standeth afar off: for truth is fallen in the street, and equity cannot enter. (Isaiah 59:14)