Proverbs 12:23

A prudent man conceals knowledge, but the heart of fools proclaims folly.

Proverbs 13:16

In everything the prudent acts with knowledge, but a fool flaunts his folly.

Proverbs 15:2

The tongue of the wise commends knowledge, but the mouths of fools pour out folly.

Proverbs 11:13

Whoever goes about slandering reveals secrets, but he who is trustworthy in spirit keeps a thing covered.

Proverbs 10:14

The wise lay up knowledge, but the mouth of a fool brings ruin near.

Proverbs 10:19

When words are many, transgression is not lacking, but whoever restrains his lips is prudent.

Ecclesiastes 10:3

Even when the fool walks on the road, he lacks sense, and he says to everyone that he is a fool.

Ecclesiastes 10:12-14

The words of a wise man's mouth win him favor, but the lips of a fool consume him.

Treasury of Scripture Knowledge

Summary

A prudent man concealeth knowledge: but the heart of fools proclaimeth foolishness.

General references

Bible References

A prudent

Proverbs 10:19
When words are many, transgression is not lacking, but whoever restrains his lips is prudent.
Proverbs 11:13
Whoever goes about slandering reveals secrets, but he who is trustworthy in spirit keeps a thing covered.
Proverbs 13:16
In everything the prudent acts with knowledge, but a fool flaunts his folly.

But

Proverbs 15:2
The tongue of the wise commends knowledge, but the mouths of fools pour out folly.
Ecclesiastes 10:3
Even when the fool walks on the road, he lacks sense, and he says to everyone that he is a fool.

General references

Proverbs 14:33
Wisdom rests in the heart of a man of understanding, but it makes itself known even in the midst of fools.
Proverbs 29:11
A fool gives full vent to his spirit, but a wise man quietly holds it back.

The Holy Bible, English Standard Version® copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.