The Rephaim are an ancient race of giants in Hebrew tradition — a mysterious people of great stature who dwelt in the lands east and west of the Jordan before Israel, and whose very name came also to denote the shades of the mighty dead in the underworld. They occupy a strange double place in Hebrew thought: living giants of old, and ghostly inhabitants of the realm below.
The Giant Peoples of Old
The Rephaim are listed among the gigantic nations that occupied the land in primeval times. “The Rephaim used to dwell there” in the land later called the country of the Ammonites, “a people great and many, and tall as the Anakim.” They are named alongside the [anakim], the Emim, and the Zamzummim as ancient giant-clans, and [og] of Bashan is remembered as the last remnant of the Rephaim, his iron bed a measure of their size. They were a real and dreaded presence in the memory of the land — the giants who came before.
The Valley and the Shades
Their name marked the landscape: the Valley of Rephaim near Jerusalem bore their memory long after they were gone. But the word rephaim carried a second, eerie meaning. In the poetic and prophetic books it names the shades — the spirits of the dead who dwell in Sheol, the silent underworld. “The Rephaim tremble beneath the waters,” says Job; and Isaiah taunts the fallen king of Babylon: “Sheol beneath is stirred up to meet you... it rouses the Rephaim, all who were leaders of the earth.” The mighty dead, the departed kings and heroes, became the Rephaim of the grave.
Giants and Ghosts
This doubleness — living giant and underworld shade — weaves the Rephaim into the deepest layers of Hebrew thought about the great and the dead. Some scholars trace the connection through the idea that the heroic dead, the once-mighty fallen ones, descend to a shadowy half-life below, just as the giant Nephilim of old were said to leave restless spirits behind. Whether as the towering peoples whom Israel displaced or as the trembling shades of departed greatness, the Rephaim embody the memory of a vanished might — the giants of the world’s morning, now dwelling in the dust and the deep.