Matthew 15:11
A man is not defiled by what enters his mouth, but by what comes out of it."

Matthew 12:34
You brood of vipers, how can you who are evil say anything good? For out of the overflow of the heart, the mouth speaks.

1 Samuel 24:13
As the old proverb says, 'Wickedness proceeds from the wicked.' But my hand will never be against you.

Psalm 36:3
The words of his mouth are wicked and deceitful; he has ceased to be wise and well-doing.

Proverbs 6:12
A worthless person, a wicked man, walks with a perverse mouth,

Proverbs 10:32
The lips of the righteous know what is fitting, but the mouth of the wicked is perverse.

Proverbs 15:2, 28
The tongue of the wise commends knowledge, but the mouth of the fool spouts folly. . . .

Luke 19:22
His master replied, 'You wicked servant, I will judge you by your own words. So you knew that I am a harsh man, withdrawing what I did not deposit and reaping what I did not sow?

James 3:6-10
The tongue also is a fire, a world of wickedness among the parts of the body. It pollutes the whole person, sets the course of his life on fire, and is itself set on fire by hell. . . .

Revelation 13:5, 6
The beast was given a mouth to speak arrogant and blasphemous words, and authority to act for 42 months. . . .