Berean Study Bible
The heart of the wise man instructs his mouth and adds persuasiveness to his lips.

King James Bible
The heart of the wise teacheth his mouth, and addeth learning to his lips.

American Standard Version
The heart of the wise instructeth his mouth, And addeth learning to his lips.

Darby Bible Translation
The heart of the wise maketh his mouth intelligent, and upon his lips increaseth learning.

Douay-Rheims Bible
The heart of the wise shall instruct his mouth: and shall add grace to his lips.

English Revised Version
The heart of the wise instructeth his mouth, and addeth learning to his lips.

Young's Literal Translation
The heart of the wise causeth his mouth to act wisely, And by his lips he increaseth learning,