Prior to the Days of Unleavened Bread we will be removing leavening from our homes. When we talk about leavening we talk about it as a type of sin. As we study this subject we learn that it is much more than this. It is not just the act of sin it actually the motivations for sin. God has us do this every year to rehearse these truths. Leavening is put in bread to make it puffy. Paul warns Christians to be aware of being vainly puffed up. Being puffed up is what causes us to sin. Leavening pictures what causes us to sin.