Proverbs 15:26
The LORD detests the thoughts of the wicked, but the thoughts of the pure are pleasing.
Psalm 19:14
Let the words of my mouth and the meditation of my heart be acceptable in your sight, LORD, my Rock, and my redeemer.
Psalm 37:30-31
The mouth of the righteous talks of wisdom. His tongue speaks justice.
Psalm 45:1
My heart overflows with a noble theme. I recite my verses for the king. My tongue is like the pen of a skillful writer.
Proverbs 6:16-19
There are six things which the LORD hates; yes, seven which are an abomination to him:
Proverbs 15:23
Joy comes to a man with the reply of his mouth. How good is a word at the right time.
Proverbs 24:9
The schemes of folly are sin. The mocker is detested by men.
Jeremiah 4:14
Jerusalem, wash your heart from wickedness, that you may be saved. How long shall your evil thoughts lodge within you?
Matthew 12:34-37
You offspring of vipers, how can you, being evil, speak good things? For out of the abundance of the heart, the mouth speaks.
Matthew 15:19
For out of the heart come forth evil thoughts, murders, adulteries, sexual sins, thefts, false testimony, and blasphemies.