Proverbs 10:14 Wise men lay up knowledge: but the mouth of the foolish is near destruction.

Proverbs 12:13 The wicked is snared by the transgression of his lips: but the just shall come out of trouble.

Proverbs 13:3 He that keepeth his mouth keepeth his life: but he that openeth wide his lips shall have destruction.

Ecclesiastes 10:3 Yea also, when he that is a fool walketh by the way, his wisdom faileth him, and he saith to every one that he is a fool.

Ecclesiastes 10:12 The words of a wise man's mouth are gracious; but the lips of a fool will swallow up himself.

Ecclesiastes 10:13 The beginning of the words of his mouth is foolishness: and the end of his talk is mischievous madness.

James 3:6 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.

James 3:8 But the tongue can no man tame; it is an unruly evil, full of deadly poison.