He
is warning them they will inherit God's Kingdom, despite having been saved, if they commit those sins he lists.
1 Corinthians 6
9Or do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived; neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor homosexuals,
10nor thieves, nor
the covetous, nor drunkards, nor revilers, nor swindlers, will inherit the kingdom of God.
11Such were some of you; but you were washed, but you were sanctified, but you were justified in the name of the Lord Jesus Christ and in the Spirit of our God.
1 Corinthians 10
6Now these things happened as examples for us, so that we would not crave evil things as they also craved.
7Do not be idolaters, as some of them were; as it is written, “THE PEOPLE SAT DOWN TO EAT AND DRINK, AND STOOD UP TO PLAY.”
8Nor let us act immorally, as some of them did, and twenty-three thousand fell in one day.
9Nor let us try the Lord, as some of them did, and were destroyed by the serpents.
10Nor grumble, as some of them did, and were destroyed by the destroyer.
11Now these things happened to them as an example, and they were written for our instruction, upon whom the ends of the ages have come.
12Therefore let him who thinks he stands take heed that he does not fall.
13No temptation has overtaken you but such as is common to man; and God is faithful, who will not allow you to be tempted beyond what you are able, but with the temptation will provide the way of escape also, so that you will be able to endure it.
14Therefore, my beloved, flee from idolatry.