6:9-11 The Corinthians are warned against many great evils, of which they had formerly been guilty. There is much force in these inquiries, when we consider that they were addressed to a people puffed up with a fancy of their being above others in wisdom and knowledge. All unrighteousness is sin; all reigning sin, nay, every actual sin, committed with design, and not repented of, shuts out of the kingdom of heaven. Be not deceived. Men are very much inclined to flatter themselves that they may live in sin, yet die in Christ, and go to heaven. But we cannot hope to sow to the flesh, and reap everlasting life. They are reminded what a change the gospel and grace of God had made in them. The blood of Christ, and the washing of regeneration, can take away all guilt. Our justification is owing to the suffering and merit of Christ; our sanctification to the working of the Holy Spirit; but both go together. All who are made righteous in the sight of God, are made holy by the grace of God.
9. unrighteous—Translate, "Doers of wrong": referring to 1Co 6:8 (compare Ga 5:21).
kingdom of God—which is a kingdom of righteousness (Ro 14:17).
fornicators—alluding to 1Co 5:1-13; also below, 1Co 6:12-18.
effeminate—self-polluters, who submit to unnatural lusts.