Proverbs 16:23
A wise heart ordereth his mouth wisely; and amendeth the doctrine in his lips.
Proverbs 15:28
A righteous man museth in his mind how to do good; but the mind of the ungodly imagineth how he may do harm.
Psalm 37:30-31
The mouth of the righteous is exercised in wisdom, and his tongue talketh of judgment.
Psalm 45:1
{To the Chanter, upon Shoshannim, an instruction of the children of Korah; a song of love} My heart is inditing of a good matter; I speak the things which I have made unto the King. My tongue is the pen of a ready writer.
Proverbs 22:17-18
My son, bow down thine ear, and hearken unto the words of wisdom, apply thy mind unto my doctrine -
Matthew 12:34-35
O generation of vipers, how can ye say well, when ye yourselves are evil? For of the abundance of the heart, the mouth speaketh.
Colossians 3:16
Let the word of Christ dwell in you plenteously in all wisdom. Teach and exhort your own selves, in psalms, and hymns, and spiritual songs which have favour with them, singing in your hearts to the Lord.