Luke 11:39

Now ye Pharisees make clean the outside of the cup and the dish; but your inward part is full of rapine and wickedness.

Luke 22:47-48

And while he yet spake, behold a multitude, and he that was called Judas, one of the twelve, went before them, and drew near to Jesus to kiss him.

Matthew 23:27

Wo to you, scribes and Pharisees, hypocrites; for ye are like whited sepulchres, which outwardly indeed appear beautiful, but within 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

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