Proverbs 26:23-26

23 Like silver dross on an earthen vessel  Are the lips of a fervent one with an evil heart.

24 A malicious man disguises himself with his lips,  But he harbors evil in his heart.

25 When his speech is charming, don't believe him;  For there are seven abominations in his heart:

26 His malice may be concealed by deception,  But his wickedness will be exposed in the assembly.