Matthew 15:18
But the things that come out of the mouth proceed from the heart, and it is these that defile the man.
Matthew 12:34
O vipers' brood, how can you speak what is good when you are evil? For it is from the overflow of the heart that the mouth speaks.
Matthew 15:11
It is not what goes into a man's mouth that defiles him; but it is what comes out of his mouth--*that* defiles a man."
James 3:6-10
And the tongue is a fire. That world of iniquity, the tongue, is placed within us spotting and soiling our whole nature, and setting the whole round of our lives on fire, being itself set on fire by Gehenna.
Luke 19:22
"'By your own words,' he replied, 'I will judge you, you bad servant. You knew me to be a severe man, taking up what I did not lay down, and reaping what I did not sow:
Revelation 13:5-6
And there was given him a mouth full of boastful and blasphemous words; and liberty of action was granted him for forty-two months.