1 Corinthians 6 – vs.1 “How dare any of you, having a matter against another, go to law before the unjust, and not before the saints?”
Why would you take your brother before an unrighteous judge? We will judge the world and the angels. Is there not a wise or competent man among you? Where you take your brother before the law, you defraud him and have done more damage than he did. God tells us who will inherit the kingdom of God vs.9,10: “ 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, 10 Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.”
If a brother is in that category, he will suffer the loss. Let God take vengeance. He will do the work much better than we could ever. All things are lawful for us, but they are not all profitable. You belong to the Lord, you have been bought with a price, so glorify God in your body. Paul talks about immorality again. We belong to God and not to defile ourselves.