Proverbs 26:23-28

Like the glaze covering an earthen vessel are fervent lips with an evil heart. Whoever hates disguises himself with his lips and harbors deceit in his heart; when he speaks graciously, believe him not, for there are seven abominations in his heart; though his hatred be covered with deception, his wickedness will be exposed in the assembly. Whoever digs a pit will fall into it, and a stone will come back on him who starts it rolling. A lying tongue hates its victims, and a flattering mouth works ruin.