They rebel against the Spirit of God - Isa. C. Rebellion alters your future People who rebel against the gospel and refuse to trust Christ will go to hell. Christians who rebel against God lose joy, opportunities, rewards, and they receive chastisement. The children of Israel rebelled against God and were not allowed to go into the Promised Land. It is like a cancer.
Rebels breed rebels.
Parents are fools if they allow their children to become companions with rebels. D. Rebels realize that it may be too late Esau sold his birthright and never did get it back. If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.