The Jewish Passover was instituted on the night God delivered his people from slavery in Egypt (Exodus 12). For each household a lamb without defect was slain, and its blood was sprinkled on the doorframe. In a similar way, Christ, our Passover Lamb, was slain for our redemption, and in this way God delivered all who believe in him from the slavery and tyranny of sin.

For the Passover feast, all yeast was to be removed from every house. This was a sign of sanctification. The yeast that leavens dough was a symbol of sin that infiltrates our lives and contaminates us through and through. It reminded people that they could not participate in the Passover with impure hearts and a defiled life. They had to throw out the old yeast, for they were being reshaped as a new unleavened batch of dough.

As believers in Christ, we have received a new heart, a new mind, a new life. We are part of a new family. We are God's people, called to be light in the world. We cannot imitate the world or be of the world. We are called to reshape it for the kingdom of God. We are a holy people, remade in Christ. We are saved from sin to live in holiness for Jesus' sake. So we must walk in a manner worthy of the gospel, depending on the power of the Holy Spirit to live for God.