Proverbs 10:32

The lips of the righteous know what is acceptable: but the mouth of the wicked speaketh frowardness.

The lips of the righteous know and discern what is acceptable and fitting to say. By contrast, the mouth of the wicked speaks what is crooked. The words of the righteous are pure and wise and kind. Such words can soothe a wounded heart or help save a soul, while harmful words wound others and can lead them toward ruin. Everyday speech is therefore to be kept under careful watch, and words are to be used to do good.