Proverbs 20:15

There is gold and a multitude of jewels,
but knowledgeable lips are a rare treasure.

She is more precious than jewels;
nothing you desire compares with her.

But where can wisdom be found,
and where is understanding located?

For wisdom is better than jewels,
and nothing desirable can compare with it.

The tongue of the righteous is pure silver;
the heart of the wicked is of little value.

The lips of the wise broadcast knowledge,
but not so the heart of fools.

A man takes joy in giving an answer;
and a timely word—how good that is!

Get wisdom—
how much better it is than gold!
And get understanding—
it is preferable to silver.

Anyone with a wise heart is called discerning,
and pleasant speech increases learning.

Pleasant words are a honeycomb:
sweet to the taste and health to the body.

A wise correction to a receptive ear
is like a gold ring or an ornament of gold.

In addition to the Teacher being a wise man, he constantly taught the people knowledge; he weighed, explored, and arranged many proverbs.

But how can they call on Him they have not believed in? And how can they believe without hearing about Him? And how can they hear without a preacher?

No foul language is to come from your mouth, but only what is good for building up someone in need, so that it gives grace to those who hear.

Treasury of Scripture Knowledge

There is gold, and a multitude of rubies: but the lips of knowledge are a precious jewel.