Are people who never committed idolatry or gross immorality any different from the Corinthians in 1 Corinthians 6:9-11?
No. Though many have not been steeped in idolatry or gross immorality, the potential was there, and the heart is born just as wicked as the Corinthians' hearts. All alike need God's grace and the finished work of the cross, and by faith are washed, sanctified, and justified.
Les teaches that the whole triune God—Father, Son, and Spirit—works together: the Father looks down on sinful men, the Holy Spirit convicts them of the finished work of God the Son, and the triune God washes these kind of people. He explains that you and I were no different from the Corinthians. We may not have been steeped in idolatry or practicing gross immorality, but the potential was there; his heart was born just as wicked as these Corinthians, and so was yours. As a result of the grace of God, the finished work of the cross, and our faith in it, we too have been washed, sanctified, and justified in the name of the Lord Jesus and by the Spirit of our God. Paul then writes in verse 12 that all things are lawful unto him, but all things are not expedient, and he will not be brought under the power of any. Les asks whether Paul is saying he can steal, commit adultery, or covet, and answers no.
Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,
Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.
And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the Spirit of our God.
More Questions
What happened to the Corinthians who used to practice the sins listed in 1 Corinthians 6:9-10?
Some of the Corinthian believers formerly were those kinds of sinners, but they were washed, that is, cleansed of all their wickedness.
Were the Corinthian believers saved even though they had been immoral?
The Corinthians, just like Peter and the other ten apostles, had their salvation: they were washed of their sins and their iniquity.