{37:21} A wicked word can change the heart. From the heart four kinds of things arise: good and evil, life and death. And the tongue is continually their ruler. There is a man who is an astute teacher of many, and yet this is useless to his own soul.
{37:22} A man of experience has taught many, and this is pleasant to his own soul.
{37:23} Whoever speaks mere rhetoric is hateful; he will be deceived in every matter.
{37:24} Grace is not given to him from the Lord. For he has been deprived of all wisdom.
{37:25} There is a wise man who is wise within his own soul, and the fruit of his understanding is praiseworthy.