Hell or anything much like it, hardly gets a mention in the Old Testament, or in he teachings of Jesus in the new. The idea only begins to emerge, at about the time the Christian church begins to become the successor to the Roman Empire and starts to have imperial pretensions. ( I wonder why ? ) But even by the sixth century Islamic theology had largely done with it, and substituted Purgatory as a place of healing, as a more realistic idea, so that modern Moslems find the Christian idea of heaven, hell and salvation largely laughable.