His mouth is full of cursing and deceit and fraud: under his tongue is mischief and vanity.
Psalms 12:2They speak vanity every one with his neighbour: with flattering lips and with a double heart do they speak.
Psalms 41:6And if he come to see me, he speaketh vanity: his heart gathereth iniquity to itself; when he goeth abroad, he telleth it.