For how many centuries the two kingdoms existed side by side, sometimes in peaceful intercourse, sometimes in hostile collision, it is impossible to say. The fact that Egypt had once been divided into two kingdoms was never forgotten; down to the last days of the Egyptian monarchs the Pharaoh bore the title of "lord of the two lands," and on his head was placed the twofold crown of Upper and Lower Egypt. Nekhen was under the protection not only of Horus, the god of the Pharaonic Egyptians, but also of Nekheb, the tutelary goddess of the whole of the southern land. From the Cataract northward her dominion extended, but it was at El-Kab opposite Nekhen, where the road from the Red Sea and the mines of the desert reached the Nile, that her special sanctuary stood. Besh calls himself on his vases "the son of Nekheb"; and even as late as the time of the Sixth Dynasty the eldest son of the king was entitled "the royal son of Nekheb."(12)
Nekheb, the vulture, was the goddess of the south, in contradistinction to Uazit, the serpent, the goddess of the north. But in both the south and the north the same dominant race held rule, the same customs prevailed, and the same language was spoken. The Pharaonic Egyptians, in their northern advance, had carried with them a common legacy of ideas and manners. Their religious conceptions had been the same, and consequently the general form assumed by the religious cult was similar. In spite of local differences and the self-centred character of the numerous independent principalities, there was, nevertheless, a family likeness between them all. Ideas and customs, therefore, which grew up in one place passed readily to another, and the influence of a particular local sanctuary was easily carried beyond the limits of the district in which it stood.
One of the most fundamental of the beliefs which the Pharaonic Egyptians brought with them was that in the divine origin of certain individuals. The prince who led them was not only the son of a god or goddess, he was an incarnation of the god himself. The belief is one of the many facts which link the Pharaonic civilisation with the culture of primitive Babylonia. In Babylonia also the king was divine. One of the early kings of Ur calls himself the son of a goddess, just as Besh does at Nekhen; and the great conquerors of primeval Asia, Sargon of Akkad and his son Naram-Sin, give themselves the title of "god" in their inscriptions; while Naram-Sin is even invoked during his lifetime as "the god of the city of Agadê" or Akkad. For many generations the Babylonian kings continued to receive divine honours while they were still alive; and it was not until after the conquest of Babylonia by a tribe of half-civilised foreigners from the mountains of Elam that the old tradition was broken, and the reigning king ceased to be a god. Like the doctrine of the divine right of kings in England, which could not survive the fall of the Stuarts, the doctrine of the divine nature of the monarch did not survive in Babylonia the fall of the native dynasties.