Proverbs 16:23
The heart of the wise will make his mouth judicious, and upon his lips, it will add persuasiveness.
Proverbs 15:28
A heart of righteousness will ponder the answer, but a mouth of wickedness will pour out deceit.
Psalm 37:30-31
[The] mouth of [the] righteous utters wisdom, and his tongue speaks justice.
Psalm 45:1
My heart is moved [with] a good word; I recite my {compositions} to [the] king. My tongue [is the] pen [of] a skilled scribe.
Proverbs 22:17-18
Incline your ear and hear the words of the wise; you shall apply your heart to my teaching.
Matthew 12:34-35
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.
Colossians 3:16
Let the word of Christ dwell in you richly, teaching and admonishing one another with all wisdom, with psalms, hymns, [and] spiritual songs, singing with thankfulness in your hearts to God,