When Horus arrived at years of maturity, he set out to find Set and to wage war against his father's murderer. At length they met and a fierce fight ensued, and though Set was defeated before he was finally hurled to the ground, he succeeded in tearing out the right eye of Horus and keeping it. Even after this fight Set was able to persecute Isis, and Horus was powerless to prevent it until Thoth made Set give him the right eye of Horus which he had carried off. Thoth then brought the eye to Horus, and replaced it in his face, and restored sight to it by spitting upon it. Horus then sought out the body of Osiris in order to raise it up to life, and when he found it he untied the bandages so that Osiris might move his limbs, and rise up. Under the direction of Thoth Horus recited a series of formulas as he presented offerings to Osiris, and he and his sons and Anubis performed the ceremonies which opened the mouth, and nostrils, and the eyes and the ears of Osiris. He embraced Osiris and so transferred to him his ka, i.e., his own living personality and virility, and gave him his eye which Thoth had rescued from Set and had replaced in his face. As soon as Osiris had eaten the eye of Horus he became endowed with a soul and vital power, and recovered thereby the complete use of all his mental faculties, which death had suspended. Straightway he rose up from his bier and became the Lord of the Dead and King of the Under World. Osiris became the type and symbol of resurrection among the Egyptians of all periods, because he was a god who had been originally a mortal and had risen from the dead.