New Revised Standard Version
The mouth of the righteous is a fountain of life, but the mouth of the wicked conceals violence.

Contemporary English Version
The words of good people are a source of life, but evil hides behind the words of the wicked.

New American Bible
The mouth of the just is a fountain of life, but the mouth of the wicked conceals violence.

Douay-Rheims Bible
Hatred stirreth up strifes: and charity covereth all sins.

Hatred stirreth up strifes: and charity covereth all sins.

mouth

Proverbs 10:20,21,32 The lips of the just teach many: but they that are ignorant, shall die in the want of understanding. . . .

Proverbs 13:14 The law of the wise is a fountain of life, that he may decline from the ruin of death.

Proverbs 15:7 The lips of the wise shall disperse knowledge: the heart of fools shall be unlike.

Proverbs 16:22-24 Knowledge is a fountain of life to him that possesseth it: the instruction of fools is foolishness. . . .

Proverbs 18:4 Words from the mouth of a man are as deep water: and the fountain of wisdom is an overflowing stream.

Proverbs 20:15 There is gold and a multitude of jewels: but the lips of knowledge are a precious vessel.

Psalm 37:30,31 The mouth of the just shall meditate wisdom: and his tongue shall speak judgment. . . .

Ephesians 4:29 Let no evil speech proceed from your mouth: but that which is good, to the edification of faith: that it may administer grace to the hearers.

but

Psalm 107:42 The just shall see, and shall rejoice, and all iniquity shall stop her mouth.

Ecclesiastes 10:12-14 The words of the mouth of a wise man are grace: but the lips of a fool shall throw him down headlong. . . .

Matthew 12:34-37 O generation of vipers, how can you speak good things, whereas you are evil? for out of the abundance of the heart the mouth speaketh. . . .

James 3:5-8 Even so the tongue is indeed a little member and boasteth great things. Behold how small a fire kindleth a great wood. . . .