God has already forgiven everybody, now it's up to us to hear about it which is the good news and to receive it by believing it and once you receive it by believing it you will be born again but if you don't receive it by not believing it you will not receive that forgiveness of sins because you were forgiven positionally, and in order for that forgiveness to be efficacious or effective or a reality in your life you need to believe and a part of believing is a change of mind or repentance or in other words in the Greek metanoia.