A Horcrux is an object used to store part of a person's soul, protecting him or her from death. If the body of the Horcrux's creator is destroyed, the person is still able to survive. When the body of a Horcrux owner is killed, that portion of the soul that had remained in the body does not pass on to the next world, but will rather exist in a non-corporeal form capable of being resurrected by another wizard. If all of someone's Horcruxes are destroyed, then the soul's only anchor in the material world would be the body, the destruction of which would then cause final death.