In the earliest ages of the world, when the sands of Egypt were first warmed by the eye of the sky, Ra was the undisputed master of all existence. He was the great creator, the king of the gods, and the source of all life that pulsed through the Nile Valley. In those days, Ra walked upon the earth in the form of a man, though his stature was immense and his presence radiated a light that no mortal eye could directly behold. He ruled from the magnificent city of Iunu, which the Greeks would later name Heliopolis, the City of the Sun. This was the place where the Benben stone stood, marking the spot where the first mound of earth rose from the chaotic waters of Nu. Ra's power was absolute, yet even the gods were not entirely immune to the passage of aeons. As the centuries turned into millennia, the great sun-god began to grow old. His bones turned to silver, his flesh to gold, and his hair to lapis lazuli. Most tellingly, his divine focus began to waver, and his strength, once as tireless as the midday sun, began to flicker like a candle in the evening breeze. He would sometimes tremble as he walked, and the divine essence—the very fluid of his life—would occasionally trickle from his mouth and fall onto the parched soil of Egypt.
Among the many deities who resided in the court of Ra was Isis. She was the daughter of Geb, the god of the earth, and Nut, the goddess of the sky. Isis was not merely a goddess of motherhood and protection; she was the Mistress of Magic, a weaver of words, and a seeker of hidden truths. She was more clever than a million men and more insightful than a million gods. While the other deities were content to bask in the fading glory of Ra, Isis looked to the future. she looked at her husband Osiris, and her yet-unborn son Horus, and she knew that for them to rule and for the cosmos to remain stable, the secrets of the universe must be mastered. She knew that Ra possessed one thing that made him invincible: his secret name. In the Egyptian tradition, a name was not just a label; it was the essence of a being's soul. To know someone’s true name was to have total power over them. Ra had many names known to the world—he was Khepri at dawn, Ra at noon, and Atum at dusk—but his hidden name, the name given to him at the moment of his own creation, remained locked within his chest, known to no one but himself.
Isis watched Ra with the patience of a predator. She followed him through the sacred groves of Heliopolis and along the banks of the river. She waited for the moment when the aging king would falter. One afternoon, as Ra was walking through his gardens, a drop of his divine spittle fell from his lip and landed upon the dust of the road. This was the opportunity Isis had anticipated. After Ra had passed, she hurried to the spot and knelt in the dirt. She did not merely observe the spittle; she gathered it, mixing the liquid of the god with the clay of the earth from which all life was fashioned. Using her nimble fingers and her vast knowledge of Heka, or magic, she began to mold the mixture into a shape. She did not create a creature of the natural world, but a thing of artifice and enchantment. She fashioned a serpent, the first of its kind, a creature of venom and stealth. Unlike the snakes created by Ra during the dawn of time, which were bound by his laws, this serpent was made of Ra's own substance and was therefore capable of piercing his divine hide.