Wise and Foolish Talk
A fool’s mouth lashes out with pride, but the lips of the wise protect them. Prov 14:3
The tongue of the wise adorns knowledge, but the mouth of the fool gushes folly. 15:2
The lips of the wise spread knowledge, but the hearts of the fools are not upright. 15:7
The hearts of the wise make their mouths prudent, and their lips promote instruction. 16:23
The lips of fools bring them strife, and their mouths invite a beating. The mouths of fools are their undoing, and their lips are a snare to their very lives. 18:6,7
Better the poor whose walk is blameless than a fool whose lips are perverse. 19:1
My son, if your heart is wise, then my heart will be glad indeed; my inmost being will rejoice when your lips speak what is right. 23:15-16
Appropriate Speech
A person find joy in giving an apt reply- and how good is a timely word! 15:23
The wise in heart are called discerning and gracious words promote instruction. 16:21
Gracious words are a honeycomb, sweet to the soul and healing to the bones. 16:24
Like apples of gold in settings of siler is a ruling rightly given. 25:11
If anyone loudly blesses their neighbor early in the morning, it will be taken as a curse. 27:14
Controlled Speech
A gentle answer turns away wrath, but a harsh word stirs up anger. 15:1
The one who has knowledge uses words with restraint, and whoever has understanding is even-tempered. 17:27
Through patience a ruler can be persuaded, and a gentle tongue can break a bone. 25:15
Power of the tongue
From the fruit of their mouth a person’s stomach is filled; with the harvest of their lips they are satisfied.
The tongue has the power of life and death, and those who love it will eat its fruit. 18:20,21
There are several more verses in Proverbs about the tongue and how we should or should not use it.