New Revised Standard Version
The mind of the righteous ponders how to answer, but the mouth of the wicked pours out evil.

Contemporary English Version
Good people think before they answer, but the wicked speak evil without ever thinking.

New American Bible
The heart of the just ponders a response, but the mouth of the wicked spews evil.

Douay-Rheims Bible
The mind of the just studieth obedience: the mouth of the wicked overfloweth with evils.

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: