A Little Yeast Spreads Through the Whole Bulk of Bread

The bible uses that as a picture of sin, just like a little yeast quickly spreads through the whole lump of dough. Paul says, open rebellious sin by those who, with their mouths say they belong to jesus, will soon affect and corrupt and destroy the whole church. For christ, you see, our passover lamb has been sacrificed for sin. Let us therefore celebrate the festival, not with the old leaven which he was crucified for - but we get o celebrate it with the unleavened bread of truth,. In his death on the cross, why would his body be ripped apart to get rid of his sin? Why would people put him in their midst whose lives are