God does not correct people with this level of severity. God loves His children, and corrects them with love.
Lets have a look at the following scriptures:
Mat 18:15 -18 “If your brother sins against you, go and tell him his fault, between you and him alone. If he listens to you, you have gained your brother. But if he does not listen, take one or two others along with you, that every charge may be established by the evidence of two or three witnesses. If he refuses to listen to them, tell it to the church. And if he refuses to listen even to the church, let him be to you as a Gentile and a tax collector. Truly, I say to you, whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven.
The above scripture shows the idea of binding (of a sin) or loosing (of a sin). The very concept said to His disciples "whatever sin you forgive will be forgiven.." etc
The un-forgiveness of a sin comes after a process, starting as seen, you personally warn the person, they don't listen, you tell the church to help you correct them, they still won't listen, then they should not be seen as forgiven.