The two most common words for hell are hades and gehēnna. Hades was the Greek word for the realm of the dead, but Jesus uses it more specifically to refer to a place of torment (Luke 16:23), a place that is the opposite of heaven (Matthew 11:23). Originally gehēnna referred to Hinnom Valley south of Jerusalem, where centuries earlier child sacrifice was practiced (2 Kings 23:10; Jeremiah 7:32). By the time of Jesus, gehēnna was a picture of hell, such that Jesus warns "fear him who can destroy both soul and body in hell [gehēnna]" (Matthew 10:28). ~ Matthew Harmon