In Egyptian mythology, the significance of Osiris' resurrection is central to themes of life, death, and rebirth. Osiris, the god of the afterlife, was murdered by his brother Seth and dismembered. His wife, Isis, gathered his pieces and brought him back to life through powerful magic. This resurrection not only symbolizes the eternal cycle of life but also establishes Osiris as the ruler of the underworld. His story emphasizes the belief in immortality and the hope for life after death, influencing Egyptian practices surrounding burial and the afterlife.