Nebhât or Nephthys was individualised in order to complete the trinity of Set, of which Set was the central figure. We can tell, accordingly, when she thus developed into a separate goddess. It was when the doctrine of the Trinity first became dominant in the Egyptian schools of theology, and all the chief deities of the country were forced to conform to it. Anubis, the second person in the trinity of Set, must have already been attached to the cult of Osiris. How this came about is not difficult to discover. Anubis the jackal was the god of the underworld. Like his symbol, the jackal, he watched over the tombs, more especially in “the mountain” far away from the cultivated land. His sacred animal already appears mounted on its standard on the early slate plaques of Nekhen and Abydos by the side of the Horus-hawk. He was, in fact, worshipped in many of the nomes, above all at Siût, where he was adored as “the opener of the paths” to the world below. He was the inventor of the art of embalming; he must therefore have been the god of the dead when the Pharaonic Egyptians first settled themselves in Upper Egypt. In one sense, indeed, he was younger than Horus, since “the followers of Horus” had not brought the art with them from their earlier home; but he was already god of the dead, and the discovery of the art was accordingly ascribed to him. The acceptance of Osiris as the god of the underworld meant the displacement of Anubis. He had to make way for “the lord of Daddu.” The fact is a striking illustration of the influence which the Osirian teaching must have possessed. Osiris was the feudal god only of a nome in the north of the Delta; Anubis had been adored from time immemorial throughout the valley of the Nile. The cities which recognised him as their chief deity were numerous and powerful. Nevertheless he had to yield to the rival god and take a subordinate place beside him. He remained, indeed, in the pantheon, for the Egyptians never broke with their past; but the part he had played in it was taken by another, and he was content to become merely the minister of Osiris and the guardian of the cemeteries of the dead.