Proverbs 18:4-6

Amplified Bible

⁴ 
The words of a man’s mouth are like deep waters [copious and difficult to fathom];
The fountain of [mature, godly] wisdom is like a bubbling stream [sparkling, fresh, pure, and life-giving].
⁵ 
To show respect to the wicked person is not good,
Nor to push aside and deprive the righteous of justice.
⁶ 
A fool’s lips bring contention and strife,
And his mouth invites a beating.