Your boasting is not good; know you not that a little leaven leavens the whole mass?

Purge out the old leaven, that you may be a new mass, as you are without leaven; for Christ, our passover, has been sacrificed for us.

Therefore, let us keep the feast, not with old leaven, nor with the leaven of malice and wickedness, but with the unleavened bread of purity and truth.