So then, let us celebrate the festival, not with the old yeast, the yeast of vice and evil, but with the bread without yeast, the bread of sincerity and truth.

How could you not understand that I was not speaking to you about bread? But beware of the yeast of the Pharisees and Sadducees!"

Then they understood that he had not told them to be on guard against the yeast in bread, but against the teaching of the Pharisees and Sadducees.