Resurrect is a spell only available in multiplayer games of the original Diablo. It will bring back a player to life, but only with a few hitpoints.
During the assault upon Mephisto’s Fortress of Bone, the army led by the Horadrim was nearly overwhelmed by the legions of the damned. As soon as one of the crusaders was slain in combat, his body would rise again as an undead warrior to fight against his former companions. On the eve of what was to be the final attack upon the Fortress, a mysterious figure in white appeared before the Council of the Horadrim. This apparition revealed to them the secret of piercing the barrier between Life and Death. By Resurrecting the slain soldiers, they could be saved from eternal corruption. Those present at the Council swore an oath never to use this ability once the battle was over, but somehow the secret escaped. This spell has the power to bring a dead soul back to the physical world, but it must be performed at the site of the person’s death.