Exodus 12:19 - Seven days shall there be no leaven found in your houses: for whosoever eateth that which is leavened, even that soul shall be cut off from the congregation of Israel, whether he be a stranger, or born in the land. (Verses like Exodus 12:19)
Matthew 16:6 - Then Jesus said unto them, Take heed and beware of the leaven of the Pharisees and of the Sadducees. (Verses like Matthew 16:6)