The conflict between Horus and Set was not a mere skirmish but a cosmic war that spanned decades, involving the entire pantheon of Egypt known as the Ennead. For eighty years, the gods sat in judgment on the island of the middle of the Nile, debating who should succeed the murdered Osiris. Horus, the son of Isis and Osiris, was the rightful heir, yet Set, the god of storms and brother of Osiris, claimed the throne by right of strength. The sun god Ra, who presided over the council, favored Set, believing Horus to be too young and untested to handle the responsibilities of kingship. This created a deadlock that frustrated both the gods and the spirits of the land.
Isis, the mother of Horus, was the most tireless advocate for her son. She used her formidable magic and her sharp wit to outmaneuver Set at every turn. On several occasions, she transformed herself to trick Set into admitting his own unworthiness. However, the conflict reached its most violent and tragic peak during a trial of endurance. Set and Horus had agreed to transform themselves into massive hippopotami and submerge themselves in the deep waters of the Nile. The one who could stay underwater for three full months would be declared the victor and the true king of Egypt.
As the two gods descended into the murky depths, Isis remained on the shore, her heart filled with anxiety for her son. She knew that Set was a master of the waters and that his strength as a creature of chaos was unmatched in such physical contests. Fearing that Horus would drown or be crushed by Set's massive jaws, Isis decided to intervene. She fashioned a magical rope out of copper and tipped it with a heavy, enchanted harpoon. With a cry of power, she cast the weapon into the river, intending to strike Set and force him to surface.
However, the currents of the Nile and the shifting silt obscured her vision. The harpoon found a target, but a cry of agony echoed through the water that chilled Isis to her core. It was the voice of Horus. The copper barb had struck her own son in his flank. Realizing her horrific mistake, Isis immediately spoke words of power to command the harpoon to release its hold. 'Fall out, fall out!' she cried, and the weapon withdrew. She gathered her strength and cast the harpoon a second time, focusing her divine sight through the ripples. This time, the weapon struck true, embedding itself in the thick hide of Set.
Set, in the form of the red hippopotamus, surfaced with a roar that shook the banks of the river. He was trapped, the magical copper biting deep into his flesh. But as he looked upon his sister, he did not fight back with violence. Instead, he appealed to their shared history. 'What have I done to you, my sister?' he pleaded. 'Why do you treat me as a stranger? Am I not the son of your mother Nut? Am I not your own flesh and blood?' He reminded her of the ancient bonds that predated the murder of Osiris, the days when they were siblings in the house of the gods. Isis, despite all she had suffered at Set's hands, felt a sudden and overwhelming wave of compassion. She could not bring herself to kill her brother while he cried out for mercy in the name of their mother.
With a heavy heart, Isis commanded the harpoon to let go. Set, freed from the trap, immediately dove back into the water and fled into the reeds. When Horus finally surfaced, gasping for air and expecting to see his mother holding their enemy captive, he found only the empty river and Isis standing with the magical tool at her side. When she explained that she had released Set out of pity, Horus was consumed by a rage that surpassed anything the gods had yet witnessed. To Horus, this was not an act of mercy; it was a betrayal of his father Osiris and a rejection of his own struggle. The 'fit of rage' described in the ancient papyri took hold of him, a divine madness that clouded his judgment.