E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
This word occurs eighteen times in the New Testament. In nine instances the Greek word is Hads; in eight instances it is Gehenna; and in one it is Tartarus.
Hades: Matt. xi. 23, xvi. 18; Luke xvi. 23; Acts ii. 31; 1 Cor. xv. 55; Rev. i. 18, vi. 8, xx. 13, 14. (See HADES.)
Gehenna: Matt. v. 22, 29, x. 28, xiii. 15, xviii. 9, xxiii. 15, 33; James iii. 6. (See GEHENNA.)
Tartarus: 2 Peter ii. 4. (See TARTAROS.)
Descended into hell (Creed) means the place of the dead. (Anglo-Saxon, helan, to cover or conceal, like the Greek Had, the abode of the dead, from the verb a-eido, not to see. In both cases it means the unseen world or the world concealed from sight. The god of this nether world was called Hadës by the Greeks, and Hel or Hela by the Scandinavians. In some counties of England to cover in with a roof is to hell the building, and thatchers or tilers are termed helliers.