1 Corinthians 5:6-8

New Matthew Bible

⁶ Your complacency is not good. Do you not know that a little leaven sours the whole lump of dough? ⁷ Purge therefore the old leaven, so that you may be new dough, as you are sweet bread. For Christ our Passover lamb is offered up for us. ⁸ Therefore let us keep holy day – not with old leaven, neither with the leaven of immorality and wickedness, but with the sweet bread of pureness and truth.