Oniontchi please calm down. We went on to different points but you're bringing it back again. Just remember next time to watch what and how you say something so we don't have this issue again.
How can she know? Because hell is described in the Bible as a terrible, horrible place.
The one question I get a lot is "if God is so good, why does He send people to hell just for not believing in Him?” So, here's my answer:
1. None of us are perfect. We all sin and God is perfect. Therefore, we deserve the punishment for the bad stuff we do. We all deserve hell.
2. In the Old Testament they had sacrificial forgiveness. Sounds gory, but that's how it was set up at the time. God didn't change but how he set up redemption did [obviously we don't do that anymore]. "With out the shedding of blood there can be no forgiveness". The animals/foods had to be the best pick, spotless, etc.
3. Jesus came to be the final perfect sacrifice. He was without sin but was crucified because they didn't like what he said. See, this is where Judaism and Christianity splits. We believe that Jesus was messiah, fulfilled all the prophesies, etc. They believe that when the messiah came he would come in on a white horse, over throw the government that was over them and reign as king and natural they didn't like this lowly guy says he was God.
4. Hell is a place for the Devil and all who do not
choose God. In our life time was all have chances to accept Jesus' gift. Again, hell is a place for people for whatever reason reject God. And do you know the worst part of hell? Eternal separation from God.
So, if you choose to go against God and not accept the free gift, it seems only natural you would spend eternity away from him, right? You choose to either go with God to live in heaven with him or to go to hell eternally away from him.