Because hell is a very general term for the waiting place of the dead. It typically meant the grave, but in many cases could be termed as a place of corruption in the dead's unrighteousness. It is not the Lake of Fire described in the New Testament. These are two separate locations. The dead will rise and go before God for judgement, and those written in the book of life will live forever with God, and those who are not, will be cast into the Lake of Fire where there will be weeping and gnashing of teeth. For those who take the mark of the beast, it says they will burn eternally before God. I am not sure what punishment all others will endure, if it is the same or if something lesser, but it is not fun, of that I can assure you. I've seen weeping and gnashing of teeth in real life. It was traumatic and there was much misery involved. You don't want to take part in either outcome. Instead, learn to put your trust and faith in Christ and turn from your sins.