Why is Christ's crucifixion central to Christian faith?

The crucifixion of Christ is paramount because it embodies the core of the Gospel message. According to the preacher, it is by Christ's blood and sacrifice that we are made holy and reconciled to God. The sermon underscores that we can't serve or worship God without acknowledging Christ and Him crucified. The continual emphasis on the brazen altar serves as a reminder of the necessity of sacrifice for sin and the central role of Christ's death. His crucifixion is not merely an event but the transformative moment of salvation history, ensuring that all who believe are justified before God.