1 Cor. 6:9-11 "Do you not know that the unrighteous shall not inherit the kingdom of GOD? Do not be deceived: neither fornicators nor idolaters, nor immoral persons, nor thieves, nor covetous, nor drunkards, nor revilers, nor people who extort others shall inherit the kingdom of GOD. And such were some of you: but you are washed, but you are sanctified, but you are justified in the name of the LORD Jesus and by the Spirit of our GOD."
All of man kind is born into this world under the curse of sin. We are born with a sin nature. It is called original sin. When our earthly father Adam sinned, we sinned because we were in Adam. This fallen nature expresses itself in many forms. We have a list in verses 9 and 10 of some of the worst of these sins. Many of the believers in the city of Corinth were guilty of these same sins.
But a wonderful miracle took place. They heard the gospel of Jesus Christ and believed its message. They accepted Jesus Christ as personal Savior and were regenerated by the Spirit of GOD. The passage says that they were washed by the cleansing blood of Jesus Christ. The old hymn that we love to sing says, "what can wash away my sin? Nothing but the blood of Jesus. What can make me whole again? Nothing but the blood of Jesus. Oh precious is the flow that makes me white as snow. No other fount I know, nothing but the blood of Jesus.
They were not only forgiven and cleansed from sin but they were sanctified by the Holy Spirit. This simply means that they were set apart for the purpose of GOD. But the good news does not end there. Not only were they cleansed and sanctified, they were also justified by the Spirit of GOD. This simply means they were declared legally righteous by GOD. They were placed into the body of our Lord Jesus Christ and sealed in the righteousness of our Lord Jesus Christ. 2 Cor. 5:21 says "for He hath made Him to be sin for us who knew no sin that we might be made the righteousness of GOD in Him. All praise to His wonderful name."