Proverbs 26:23

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

Luke 11:39

The Lord said to him, "Now you Pharisees cleanse the outside of the cup and of the platter, but your inward part is full of extortion and wickedness.

Luke 22:47-48

While he was still speaking, behold, a multitude, and he who was called Judas, one of the twelve, was leading them. He came near to Jesus to kiss him.

2 Samuel 20:9-10

Joab said to Amasa, "Is it well with you, my brother?" Joab took Amasa by the beard with his right hand to kiss him.

Proverbs 10:18

He who hides hatred has lying lips. He who utters a slander is a fool.

Proverbs 25:4

Take away the dross from the silver, and material comes out for the refiner;

Ezekiel 33:31

They come to you as the people come, and they sit before you as my people, and they hear your words, but don't do them; for with their mouth they show much love, but their heart goes after their gain.

Matthew 23:27

"Woe to you, scribes and Pharisees, hypocrites! For you are like whitened tombs, which outwardly appear beautiful, but inwardly are full of dead men's bones, and of all uncleanness.

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
He who hides hatred has lying lips. He who utters a slander is a fool.
2 Samuel 20:9
Joab said to Amasa, "Is it well with you, my brother?" Joab took Amasa by the beard with his right hand to kiss him.
Ezekiel 33:31
They come to you as the people come, and they sit before you as my people, and they hear your words, but don't do them; for with their mouth they show much love, but their heart goes after their gain.
Luke 22:47
While he was still speaking, behold, a multitude, and he who was called Judas, one of the twelve, was leading them. He came near to Jesus to kiss him.