When Cambyses was back at Memphis , there appeared in Egypt that Apis whom the Greeks call Epaphus; at whose epiphany the Egyptians put on their best clothing and held a festival. Seeing the Egyptians so doing, Cambyses was fully persuaded that these signs of joy were for his misfortunes, and summoned the rulers of Memphis ; when they came before him, he asked them why the Egyptians behaved so at the moment he returned with so many of his army lost, though they had done nothing like it when he was before at Memphis . The rulers told him that a god, wont to appear after long intervals of time, had now appeared to them; and that all Egypt rejoiced and made holiday whenever he so appeared. At this Cambyses said that they lied, and he punished them with death for their lie.