A little leaven leavens the whole lump.
Do not be deceived: “Bad company ruins good morals.”
And he cautioned them, saying, “Watch out; beware of the leaven of the Pharisees and the leaven of Herod.”
It is like leaven that a woman took and hid in three measures of flour, until it was all leavened.”
In the meantime, when so many thousands of the people had gathered together that they were trampling one another, he began to say to his disciples first, “Beware of the leaven of the Pharisees, which is hypocrisy.
and their talk will spread like gangrene. Among them are Hymenaeus and Philetus,
You serpents, you brood of vipers, how are you to escape being sentenced to hell?
He told them another parable. “The kingdom of heaven is like leaven that a woman took and hid in three measures of flour, till it was all leavened.”
