Proverbs 26:24-26, 28

He who hates, disguises it with his lips, And lays up deceit within himself; When he speaks kindly, do not believe him, For there are seven abominations in his heart; Though his hatred is covered by deceit, His wickedness will be revealed before the assembly.

A lying tongue hates those who are crushed by it, And a flattering mouth works ruin.