Therefore, let us observe the feast, not with old yeast or with the yeast of malice and evil but with the unleavened bread of sincerity and truth.

Why is it you don’t understand that when I told you, ‘Beware of the yeast of the Pharisees and Sadducees,’ it wasn’t about bread?”

Then they understood that He did not tell them to beware of the yeast in bread, but of the teaching of the Pharisees and Sadducees.