Luke 12:1

1In the meantime, after so many thousands of the people had gathered that they were stepping on one another, Jesus began speaking first of all to His disciples, “Be continually on your guard against the 12:1 A substance such as yeast that consists mostly of fungi. This analogy relates the impurity of a leavening agent to the impurity of the man-made tradition and hypocrisy of the Pharisees that was preventing the nation of Israel from accepting the Messiah.leaven of the Pharisees [that is, their pervasive, corrupting influence and teaching], which is hypocrisy [producing self-righteousness].