A little leaven leavens the whole lump of dough.

It is like leaven, which a woman took and hid in three measures of flour till it was all leavened."

Then Jesus said to them, "Take heed and beware of the leaven of the Pharisees and the Sadducees."

How is it that you do not understand that I did not speak to you about bread? But beware of the leaven of the Pharisees and Sadducees."

And he cautioned them, saying, "Take heed, beware of the leaven of the Pharisees and the leaven of Herod."

In the meantime, when so many thousands of the multitude had gathered together that they trampled one another, he began to say to his disciples first of all, "Beware of the leaven of the Pharisees, which is hypocrisy.

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

Let us, therefore, celebrate the festival, not with the old leaven, the leaven of malice and wickedness, but with the unleavened bread of sincerity and truth.

He told them another parable: "The kingdom of heaven is like leaven, which a woman took and hid in three measures of flour till it was all leavened."

Your boasting is not good. Do you not know that a little leaven leavens the whole lump of dough?