Matthew 15:18

But whatever [word] comes out of the mouth comes from the heart, and this is what defiles and dishonors the man.

Matthew 12:34

You brood of vipers, how can you speak good things when you are evil? For the mouth speaks out of that which fills the heart.

Proverbs 15:2

The tongue of the wise speaks knowledge that is pleasing and acceptable,
But the [babbling] mouth of fools spouts folly.

Proverbs 15:28

The heart of the righteous thinks carefully about how to answer [in a wise and appropriate and timely way],
But the [babbling] mouth of the wicked pours out malevolent things.

Matthew 15:11

It is not what goes into the mouth of a man that defiles and dishonors him, but what comes out of the mouth, this defiles and dishonors him.”

And the tongue is [in a sense] a fire, the very world of injustice and unrighteousness; the tongue is set among our members as that which contaminates the entire body, and sets on fire the course of our life [the cycle of man’s existence], and is itself set on fire by hell (Gehenna).

1 Samuel 24:13

As the proverb of the ancients says, ‘Out of the wicked comes wickedness’; but my hand shall not be against you.

Psalm 36:3

The words of his mouth are wicked and deceitful;
He has ceased to be wise and to do good.

Proverbs 6:12

A worthless person, a wicked man,
Is one who walks with a perverse (corrupt, vulgar) mouth.

Proverbs 10:32

The lips of the righteous know (speak) what is acceptable,
But the mouth of the wicked knows (speaks) what is perverted (twisted).

Luke 19:22

He said to the servant, ‘I will judge and condemn you by your own words, you worthless servant! Did you [really] know that I was a stern man, picking up what I did not lay down and reaping what I did not sow?

Revelation 13:5-6

And the beast was given a mouth (the power of speech), uttering great things and arrogant and blasphemous words, and he was given freedom and authority to act and to do as he pleased for forty-two months (three and a half years).

Treasury of Scripture Knowledge

Summary