The mind of the just studieth obedience: the mouth of the wicked overfloweth with evils.

heart

Proverbs 15:2 The tongue of the wise adorneth knowledge: but the mouth of fools bubbleth out folly.

Proverbs 16:23 The heart of the wise shall instruct his mouth: and shall add grace to his lips.

1 Kings 3:23-28 Then said the king: The one saith, My child is alive, and thy child is dead. And the other answereth: Nay; but thy child is dead, and mine liveth. . . .

Ecclesiastes 5:2,6 Speak not any thing rashly, and let not thy heart be hasty to utter a word before God. For God is in heaven, and thou upon earth: therefore let thy words be few. . . .

1 Peter 3:15 But sanctify the Lord Christ in your hearts, being ready always to satisfy every one that asketh you a reason of that hope which is in you.

the mouth

Proverbs 10:19 The tongue of the just is as choice silver: but the heart of the wicked is nothing worth.

Proverbs 13:16 The prudent man doth all things with counsel: but he that is a fool, layeth open his folly.

Proverbs 29:11,20 A fool uttereth all his mind: a wise man deferreth, and keepeth it till afterwards. . . .

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 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.

Titus 1:10,11 For there are also many disobedient, vain talkers and seducers: especially they who are of the circumcision. . . .

James 3:6-8 And the tongue is a fire, a world of iniquity. The tongue is placed among our members, which defileth the whole body and inflameth the wheel of our nativity, being set on fire by hell. . . .

2 Peter 2:18 For, speaking proud words of vanity, they allure by the desires of fleshly riotousness those who for a little while escape, such as converse in error: