Question:
What would happen when you are a sinner if you kill someone and go to jail, and then repent?  Would you go to Heaven or to Hell?

Answer:

When we accept Christ as our Savior, before God we become brand new (2 Corinthians 5:17); in fact, we are made the righteousness of God (2 Corinthians 5:21)…no matter what we have done in the past.  However, there are physical and emotional consequences for our actions, whether we are saved or not (Galatians 6:7,8).  If a man in prison for murder becomes a believer in the Lord Jesus, he must still serve the sentence for his crime.