Proverbs 26:26

Like silver dross on an earthen vessel

are the lips of a fervent one with an evil heart.

A malicious man disguises himself with his lips,

but he harbors evil in his heart.

When his speech is charming, don’t believe him,

for there are seven abominations in his heart.

Whoever digs a pit shall fall into it.

Whoever rolls a stone, it will come back on him.

A lying tongue hates those it hurts;

and a flattering mouth works ruin.