How is it that you do not understand that I did not speak it to you concerning bread, that you should beware of the leaven of the Pharisees and of the Sadducees?
But when he saw many of the Pharisees and Sadducees come to his baptism, he said to them, O generation of vipers, who has warned you to flee from the wrath to come?
In the meantime, when there were gathered together an innumerable multitude of people, to the extent that that they trod one upon another, he began to say to his disciples first of all, Beware of the leaven of the Pharisees, which is hypocrisy.