Proverbs 26:23

Smooth lips with an evil heart
are like glaze on an earthen vessel.

Luke 11:39

But the Lord said to him: “Now you Pharisees clean the outside of the cup and dish, but inside you are full of greed and evil.

Luke 22:47-48

While He was still speaking, suddenly a mob was there, and one of the Twelve named Judas was leading them. He came near Jesus to kiss Him,

2 Samuel 20:9-10

Joab asked Amasa, “Are you well, my brother?” Then with his right hand Joab grabbed Amasa by the beard to kiss him.

Proverbs 10:18

The one who conceals hatred has lying lips,
and whoever spreads slander is a fool.

Proverbs 25:4

Remove impurities from silver,
and a vessel will be produced for a silversmith.

Ezekiel 33:31

So My people come to you in crowds, sit in front of you, and hear your words, but they don’t obey them. Although they express love with their mouths, their hearts pursue dishonest profit.

Matthew 23:27

“Woe to you, scribes and Pharisees, hypocrites! You are like whitewashed tombs, which appear beautiful on the outside, but inside are full of dead men’s bones and every impurity.

Treasury of Scripture Knowledge

Summary

Burning lips and a wicked heart are like a potsherd covered with silver dross.

That is, ardent professions of friendship from a wicked heart, however smooth, shining, and splendid they may appear, are like a vile vessel covered over with base metal

Bible References

That is, ardent professions of friendship from a wicked heart, however smooth, shining, and splendid they may appear, are like a vile vessel covered over with base metal

Proverbs 10:18
The one who conceals hatred has lying lips,
and whoever spreads slander is a fool.
2 Samuel 20:9
Joab asked Amasa, “Are you well, my brother?” Then with his right hand Joab grabbed Amasa by the beard to kiss him.
Ezekiel 33:31
So My people come to you in crowds, sit in front of you, and hear your words, but they don’t obey them. Although they express love with their mouths, their hearts pursue dishonest profit.
Luke 22:47
While He was still speaking, suddenly a mob was there, and one of the Twelve named Judas was leading them. He came near Jesus to kiss Him,

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.