1 John 5:16-17

16If you see that another Christian is doing something bad, this is what you should do. If it is a sin that does not cause death, pray that God will help him. Then God will help that person to live for ever with him. That is for a sin which does not cause death. But there is a sin that causes death. If another Christian does that, I am not saying that you should pray for God to help that person.

17Any wrong thing that a person does is sin. But not all sins cause death.