Proverbs 12:22 Lying lips are abomination to the LORD: but they that deal truly are his delight.
Proverbs 17:7 Excellent speech becometh not a fool: much less do lying lips a prince.
Proverbs 10:18 He that hideth hatred with lying lips, and he that uttereth a slander, is a fool.
Psalm 120:2 Deliver my soul, O LORD, from lying lips, and from a deceitful tongue.
Psalm 31:18 Let the lying lips be put to silence; which speak grievous things proudly and contemptuously against the righteous.
Especially appropriate for this day of the year.