Luke 11:39

Then said the Lord unto him, Now ye Pharisees make the outside of the cup and of the dish clean, but your inward parts are full of extortion and wickedness.

Luke 22:47-48

And while he was yet speaking, behold a multitude, and he who was called Judas, one of the twelve, went before them, and approached Jesus to kiss him.

Matthew 23:27

Wo unto you, scribes and Pharisees, hypocrites! for ye resemble tombs whitewashed, which outwardly indeed appear specious, but within are full of dead men's bones, and all manner of 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

Luke 22:47
And while he was yet speaking, behold a multitude, and he who was called Judas, one of the twelve, went before them, and approached Jesus to kiss him.