Proverbs 26:23-28

23 Smooth lips and an evil heart are like a vessel of earth plated with silver waste.
24 With his lips the hater makes things seem what they are not, but deceit is stored up inside him;
25 When he says fair words, have no belief in him; for in his heart are seven evils:
26 Though his hate is covered with deceit, his sin will be seen openly before the meeting of the people.
27 He who makes a hole in the earth will himself go falling into it: and on him by whom a stone is rolled the stone will come back again.
28 A false tongue has hate for those who have clean hearts, and a smooth mouth is a cause of falling.
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