mouth of a
Proverbs 10:20
The tongue of the just is as choice silver: the heart of the wicked is little worth.
Proverbs 10:21
The lips of the righteous feed many: but fools die for want of wisdom.
Proverbs 10:32
The lips of the righteous know what is acceptable: but the mouth of the wicked speaketh frowardness.
Proverbs 13:14
The law of the wise is a fountain of life, to depart from the snares of death.
Proverbs 15:7
The lips of the wise disperse knowledge: but the heart of the foolish doeth not so.
Proverbs 16:22-24
22
Understanding is a wellspring of life unto him that hath it: but the instruction of fools is folly.
23
The heart of the wise teacheth his mouth, and addeth learning to his lips.
24
Pleasant words are as an honeycomb, sweet to the soul, and health to the bones.
Proverbs 18:4
The words of a man's mouth are as deep waters, and the wellspring of wisdom as a flowing brook.
Proverbs 20:15
There is gold, and a multitude of rubies: but the lips of knowledge are a precious jewel.
Psalm 37:30
The mouth of the righteous speaketh wisdom, and his tongue talketh of judgment.
Psalm 37:31
The law of his God is in his heart; none of his steps shall slide.
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.
but
Proverbs 10:6
Blessings are upon the head of the just: but violence covereth the mouth of the wicked.
Psalm 107:42
The righteous shall see it, and rejoice: and all iniquity shall stop her mouth.
Ecclesiastes 10:12-14
12
The words of a wise man's mouth are gracious; but the lips of a fool will swallow up himself.
13
The beginning of the words of his mouth is foolishness: and the end of his talk is mischievous madness.
14
A fool also is full of words: a man cannot tell what shall be; and what shall be after him, who can tell him?
Matthew 12:34-37
34
O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh.
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.
36
But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.
37
For by thy words thou shalt be justified, and by thy words thou shalt be condemned.
James 3:5-8
5
Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth!
6
And the tongue is a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body, and setteth on fire the course of nature; and it is set on fire of hell.
7
For every kind of beasts, and of birds, and of serpents, and of things in the sea, is tamed, and hath been tamed of mankind:
8
But the tongue can no man tame; it is an unruly evil, full of deadly poison.