As the power of the Pharaohs increased, the maintenance of the cult became one of the most important affairs of state.
4 Brugsch, Egypt under the Pharaohs, i.
Conquering Pharaohs brought home trains of prisoners and spoil, embassies came thither of strange people in every variety of costume and of every hue of skin, from Ethiopia, Puoni (Punt), Mesopotamia, Asia Minor, Libya, and the islands of the Mediterranean, bringing precious stones, rare animals, beautiful slaves, costly garments and vessels of gold and silver, while the ground shook with the movement of colossal architraves, statues and obelisks.
The Tell el-Amarna tablets found in Upper Egypt in 1887 are a series of despatches in cuneiform script from Babylonian kings and Phoenician and Palestinian governors to the Pharaohs (c. 1400 B.C.).
Even in the 1st dynasty, about 4300 B.C., the Egyptian Pharaohs had their official sealers, or, to use a modern expression, keepers of the Royal Seal.