'Leaven' in the Bible

Another simile spake he to them: 'The reign of the heavens is like to leaven, which a woman having taken, hid in three measures of meal, till the whole was leavened.'

and Jesus said to them, 'Beware, and take heed of the leaven of the Pharisees and Sadducees;'

how do ye not understand that I did not speak to you of bread -- to take heed of the leaven of the Pharisees and Sadducees?'

Then they understood that he did not say to take heed of the leaven of the bread, but of the teaching, of the Pharisees and Sadducees.

and he was charging them, saying, 'Take heed, beware of the leaven of the Pharisees, and of the leaven of Herod,'

At which time the myriads of the multitude having been gathered together, so as to tread upon one another, he began to say unto his disciples, first, 'Take heed to yourselves of the leaven of the Pharisees, which is hypocrisy;

It is like leaven, which a woman, having taken, did hide in three measures of meal, till that all was leavened.'

Not good is your glorying; have ye not known that a little leaven the whole lump doth leaven?

cleanse out, therefore, the old leaven, that ye may be a new lump, according as ye are unleavened, for also our passover for us was sacrificed -- Christ,

so that we may keep the feast, not with old leaven, nor with the leaven of evil and wickedness, but with unleavened food of sincerity and truth.

a little leaven the whole lump doth leaven;