Respuesta :
he needed to be whole to complete tasks in the underworld and to live peacefully in the afterlife
Answer:
So that he would become king of the underworld
Explanation:
Isis needed to find Osiris' body parts and rebuild them so that he come back to life and could become king in the afterlife. Also, because Isis bore Osiris a son: Horus, after he was brought back to life so that Horus would avenge his father's death and reclaim the throne of Egypt from Set.