Proverbs 10:11

A fountain of life is the mouth of the righteous, And the mouth of the wicked cover doth violence.

Blessings are for the head of the righteous, And the mouth of the wicked cover doth violence.

The law of the wise is a fountain of life, To turn aside from snares of death.

Deep waters are the words of a man's mouth, The fountain of wisdom is a flowing brook.

The mouth of the righteous uttereth wisdom, And his tongue speaketh judgment.

The upright do see and rejoice, And all perversity hath shut her mouth.

The tongue of the righteous is chosen silver, The heart of the wicked -- as a little thing.

The lips of the righteous know a pleasing thing, And the mouth of the wicked perverseness!

The lips of the wise scatter knowledge, And the heart of fools is not right.

A fountain of life is understanding to its possessors, The instruction of fools is folly.

Substance, gold, and a multitude of rubies, Yea, a precious vessel, are lips of knowledge.

Words of the mouth of the wise are gracious, And the lips of a fool swallow him up.

Brood of vipers! how are ye able to speak good things -- being evil? for out of the abundance of the heart doth the mouth speak.

Let no corrupt word out of your mouth go forth, but what is good unto the needful building up, that it may give grace to the hearers;

so also the tongue is a little member, and doth boast greatly; lo, a little fire how much wood it doth kindle!

Treasury of Scripture Knowledge

The mouth of a righteous man is a well of life: but violence covereth the mouth of the wicked.