The Apostle Paul reminds the Corinthian Christians that they have been made holy through Jesus Christ. The words “washed” and “sanctified” and “justified” speaks of the process of spiritual regeneration. You are now a spiritual man having being washed from all your sins by the blood of Jesus Christ. As such, you are positionally holy in the sight of God. Your violation of God’s law has be nullified, it is no longer held against you. In other words, he tells them that God has saved them from their sins. Their behaviour must be befitting of their privileged as God’s children. He reminds them how far they have come by the rich mercies of God and exhorts them to not go back to their old ways.