The Passover Feast was to be a week where the people rid their homes and lives of all leaven or yeast. Leaven is a picture of sin. If a little sin is tolerated and accepted in the life of a believer or within the church, like leaven, it will spread and take over. We are to remove and purge all sin in our lives and in the life of the church. This study takes you through the scriptures to show examples of how sin affected the people of God and the blessing that came when it was disciplined and purged out.