Lying lips are abomination to the Lord; but they that deal truly are his
delight.
A soft answer turneth away wrath; but grievous words stir up anger.
He that answereth a matter before he heareth it, it is folly and shame unto
him.
Be not a witness against thy neighbor without cause; and deceive not with
thy lips.
Death and life are in the power of the tongue.
-- Proverbs, some selections from the Jewish Scripture
