Proverbs 16:21-24

21The wise in heart will be called understanding, And sweet speech increases persuasiveness and learning [in both speaker and listener].

22Understanding (spiritual insight) is a [refreshing and boundless] wellspring of life to those who have it, But to give instruction and correction to fools is foolishness.

23The heart of the wise instructs his mouth [in wisdom] And adds persuasiveness to his lips.

24Pleasant words are like a honeycomb, Sweet and delightful to the soul and healing to the body.