1 Corinthians 5:6-8 Your boasting is not good. Do you not know that a little leaven leavens the whole lump?

MKJV⁽ⁱ⁾ ⁶ Your boasting is not good. Do you not know that a little leaven leavens the whole lump? ⁷ Therefore purge out the old leaven so that you may be a new lump, as you are unleavened. For also Christ our Passover is sacrificed for us. ⁸ Therefore let us keep the feast; not with old leaven, nor with the leaven of malice and wickedness, but with the unleavened bread of sincerity and truth.