The Lord’s Passover begins at twilight on the fourteenth day of the first month. On the fifteenth day of that month the Lord’s Festival of Unleavened Bread begins; for seven days you must eat bread made without yeast.Passover is upon us. It's an annual reminder of God's salvation. God saved the people of Israel from bondage in Egypt. When Jesus came, he used that as an image of what he was doing spiritually, saving people from their sins.
~ Leviticus 23:5-6
The most prominent command surrounding the Passover and Feast of Unleavened Bread is the removal of yeast/leavening from one's house. Just as the early Israelites ate bread without yeast in their hasty exit from Egypt, we remember this by eating unleavened bread today. On top of that, yeast became a symbol for sin. The annual removal of yeast should serve as a reminder of what thoughts or actions in our lives are inhibiting our relationship with the Lord. Even if you don't want to tackle the chore of removing all yeast from your home, take some time cleaning something as simple as your toaster. What comes out when you open it? Just as all those burnt crumbs tumble out, spend some time reflecting on what needs to be cleaned out from your life.
Get rid of the old yeast, so that you may be a new unleavened batch—as you really are. For Christ, our Passover lamb, has been sacrificed.
~ 1 Corinthians 5:7