I've always wondered that. What about the billions of people who were completely cut off from any form of Christianity, such as people living in the rainforests or in old australia, or even india. Did all those people go to Hell? No, most Christians would say it depends how good they lived their lives. But there is a problem with that; it's subjective. Adultery, murder, and stealing might be honored in other cultures, so how does God judge them? Maybe it would have been better if we never heard of Christianity, that way we might get a free ticket.