Such were some of you, but God has washed you!
“Do you not know that wrongdoers will not inherit the kingdom of God? Do not be deceived: Neither the sexually immoral nor idolaters nor adulterers nor men who have sex with men nor thieves nor the greedy nor drunkards nor slanderers nor swindlers will inherit the kingdom of God. And that is what some of you were. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and by the Spirit of our God.” (1 Cor. 6:9-11)
These people "won't inherit the Kingdom of God"
This verse lists a few kinds of people who won't inherit the kingdom of God: wrongdoers, sexually immoral, idolaters, adulterers, men who have sex with men, thieves, the greedy, drunkards, slanderers, and swindlers!
But, there is good news!
There is hope for them! God has the power to change people, no matter how sinful they may be!
That's what some of you "were"
This same passage says something else truly remarkable! “And that is what some of you were. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and by the Spirit of our God.”
God has the power to change people!
“Therefore, if anyone is in Christ, he is a new creation. The old has passed away; behold, the new has come.” (2 Cor. 5:17)
It's done by declaring and believing Jesus
“If you declare with your mouth, 'Jesus is Lord,' and believe in your heart that God raised him from the dead, you will be saved. For with the heart one believes and is justified, and with the mouth one confesses and is saved.” (Rom. 10:9-10)