6. Your boasting is not good. Do you not know that a little leaven leavens the entire lump?
7. Therefore cleanse out the old leaven, so that you are a new lump, as you are unleavened. For also Messiah our Passover was offered for us.
8. So then let us observe the festival, not with old leaven, nor with the leaven of evil and wickedness, but with the unleavened bread of sincerity and truth.
9. I wrote to you in my letter not to keep company with those who whore.