'Speech' in the Bible

For the lips of an adulteress drip honeyAnd smoother than oil is her speech;

The wise in heart will be called understanding,And sweetness of speech increases persuasiveness.

Excellent speech is not fitting for a fool,Much less are lying lips to a prince.

Better is a poor man who walks in his integrityThan he who is perverse in speech and is a fool.

He who loves purity of heartAnd whose speech is gracious, the king is his friend.