“Watch out,” Jesus said to them, “beware of the yeast of the Pharisees and Sadducees.”

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.

He told them another parable: “The kingdom of heaven is like yeast that a woman took and mixed with three measures of flour until all the dough had risen.”