There is a sense in which Christians are always celebrating “passover.” Jews traditionally celebrate it once a year in order to commemorate the night over three thousand years ago when the angel of death “passed over” the Jewish first born, and only slew the children of their Egyptian oppressors. But as Christians we celebrate it much more frequently. Our version of “passover” is communion, when we celebrate the fact that God has “passed over” our sins and forgiven us for them. Our passover lamb is Jesus Christ, who died in our place. We commemorate his sacrifice by eating bread and drinking wine, which represent his blood and body. But even when we are not taking of communion, the death and sacrifice of Christ is always on our minds, because it is the only thing that gives ultimate meaning to our lives.
Therefore, as believers in God who are constantly celebrating “passover” we need to make sure that we celebrate it in a way that is honoring to God in our local churches. Here is how the Apostle Paul tells us to celebrate the “festival:”
Therefore let us keep the Festival, not with the old bread leavened with malice and wickedness, but with the unleavened bread of sincerity and truth (I Corinthians 5:8 NIV).
Paul stresses the fact that the church needs to make sure that they are not celebrating the feast with old bread that is leavened. The unleavened bread which are used in passover and communion celebrations primarily represents the purity and holiness of Christ, but it secondarily represents the purity and holiness of his followers, since we are supposed to be transformed to be like him. Therefore, we need to abhor sin in our lives. Specifically, we need to reject malice and wickedness in ourselves. We need to stop hurting and hating others, but start obeying the command to love others. We should not let our worship be motivated by selfish desires to make ourselves more prominent than others, but our worship should be done with the unleavened bread of sincerity and truth. Our worship should be motivated 100% by the love of God, not the love of ourselves. It should not involve deceit, or idolatry, or bad doctrine.