1 Corinthians 5:6-8; Galatians 5:9

fYour boasting is not good. Do you not know that ga little leaven leavens the whole lump? Cleanse out the old leaven that you may be a new lump, as you really are unleavened. For Christ, our Passover lamb, has been sacrificed. Let us therefore celebrate the festival, hnot with the old leaven, ithe leaven of malice and evil, but with the unleavened bread of sincerity and truth.


jA little leaven leavens the whole lump.