Matthew 15:18
But the things that come out of the mouth come from the heart, and these defile the person.
Matthew 12:34
Offspring of vipers! How are you able to say good things [when you] are evil? For from the abundance of the heart the mouth speaks.
Proverbs 15:2
The tongue of the wise will dispense knowledge, but the mouth of fools will pour out folly.
Proverbs 15:28
A heart of righteousness will ponder the answer, but a mouth of wickedness will pour out deceit.
Matthew 15:11
It is not what goes into the mouth that defiles a person, but what comes out of the mouth--this defiles a person."
James 3:6-10
And the tongue [is] a fire! The world of unrighteousness, the tongue, is set among our members, defiling the whole body and setting on fire {the course of human existence}, being set on fire by hell.
1 Samuel 24:13
Just as the ancient proverb says, 'From the wicked, wickedness goes out,' but my hand will not be against you!
Psalm 36:3
The words of his mouth [are] wickedness and deceit. He has ceased to have insight [and] to do good.
Proverbs 6:12
A worthless man, an evil man, goes around with {deceitful speech}.
Proverbs 10:32
The lips of the righteous know [the] acceptable, but the mouth of the wicked, the perverse.
Luke 19:22
He said to him, '{By your own words} I will judge you, wicked slave! You knew that I am a severe man, withdrawing what I did not deposit and reaping what I did not sow.
Revelation 13:5-6
And a mouth was given to him speaking great [things] and blasphemies, and authority to act was given to him [for] forty-two months.