1 Corinthians 5:6–8

6 iYour glorying is not good. Do you not know that ja little leaven leavens the whole lump? 7 Therefore 4purge out the old leaven, that you may be a new lump, since you truly are unleavened. For indeed kChrist, our lPassover, was sacrificed 5for us. 8 Therefore mlet us keep the feast, nnot with old leaven, nor owith the leaven of malice and wickedness, but with the unleavened bread of sincerity and truth.