Matthew 12:35
A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things.
Proverbs 10:20-21
The tongue of the just is as choice silver: the heart of the wicked is little worth.
Proverbs 25:11-12
A word fitly spoken is like apples of gold in pictures of silver.
Matthew 13:52
Then said he unto them, Therefore every scribe which is instructed unto the kingdom of heaven is like unto a man that is an householder, which bringeth forth out of his treasure things new and old.
Colossians 4:6
Let your speech be alway with grace, seasoned with salt, that ye may know how ye ought to answer every man.
Psalm 37:30-31
The mouth of the righteous speaketh wisdom, and his tongue talketh of judgment.
Proverbs 12:6
The words of the wicked are to lie in wait for blood: but the mouth of the upright shall deliver them.
Proverbs 12:17-19
He that speaketh truth sheweth forth righteousness: but a false witness deceit.
Proverbs 15:4
A wholesome tongue is a tree of life: but perverseness therein is a breach in the spirit.
Proverbs 15:23
A man hath joy by the answer of his mouth: and a word spoken in due season, how good is it!
Proverbs 15:28
The heart of the righteous studieth to answer: but the mouth of the wicked poureth out evil things.
Proverbs 16:21-23
The wise in heart shall be called prudent: and the sweetness of the lips increaseth learning.
Matthew 12:34
O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh.
Ephesians 4:29
Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers.
Colossians 3:16
Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord.