Seven days there shall be no leaven found in your houses. For whoever eats that which is leavened, even that soul shall be cut off from the congregation of Israel, among the aliens and among the natives of the land.
Then Moses called for all the elders of Israel and said to them, Draw out and take a lamb for yourselves according to your families, and kill the passover.
He spoke another parable to them: The kingdom of Heaven is like leaven, which a woman took and hid in three measures of meal until the whole was leavened.