Luke 11:39

And the Lord said to him, "Now you Pharisees [meticulously] clean the outside of the cup and the dish [i.e., this was an allusion to their lives], but you are filled with greed for wealth and [other] evils on the inside.

Luke 22:47-48

While He was still speaking suddenly one of the twelve apostles, named Judas, [who was] leading a crowd, came near Jesus to kiss Him.

Matthew 23:27

"It is too bad for you hypocritical experts in the law of Moses and [you] Pharisees! For you are like white-washed tombs, used for burial [sites], which appear beautiful on the outside, but on the inside are full of the bones and decaying flesh of dead people.

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

Luke 22:47
While He was still speaking suddenly one of the twelve apostles, named Judas, [who was] leading a crowd, came near Jesus to kiss Him.