Proverbs 16:23

16:23 A wise person’s heart makes his speech wise

and it adds persuasiveness to his words.

Proverbs 18:15

18:15 The discerning person acquires knowledge,

and the wise person seeks knowledge.

Matthew 12:35

12:35 The good person brings good things out of his good treasury, and the evil person brings evil things out of his evil treasury.