what does the bible say?
People often speak of heaven as "up" and hell as "down." But similar to heaven, hell exists beyond our physical universe as a place where the souls of humans continue to dwell. This view is also consistent with Ephesians 6:10–12, which speaks of the battle between forces in the heavenly realms. In other words, the realms of angels and demons exist in a dimension largely unseen by humans. In the Old Testament, the Hebrew word sheol is used for the realm of the dead while the Greek word used in the New Testament referring to the unseen world of the dead, often associated with judgment, is hades. Gehenna is another Greek word used to describe hell, meaning the Valley of Hinnom (Matthew 10:28; Mark 9:43). When one dies, they either go to hades—or a temporary hell until the end of times when all who are against God will be cast into the lake of fire—or heaven. Hell exists in a non-physical realm where Satan is present, along with demons and unbelievers. Unbelievers experience ongoing torment and are unable to escape their judgment. At the end of time, Satan and unbelievers will experience the "second death" in which they will be cast into the lake of fire. This dreadful situation is one no person would desire. This is why God has offered salvation through Jesus to anyone who will believe (John 3:16) and patiently offers this salvation still today (2 Peter 3:8–10).