The gods were, as mentioned previously, organized in a polity of a primitive democratic cast. They constituted, as it were, a landed nobility, each god owning and working an estate—his temple and its lands—and controlling the city in which it was located. On the national level they attended the general assembly of the gods, which was the highest authority in the cosmos, to vote on matters of national import such as election or deposition of kings. The major gods also served on the national level as officers having charge of cosmic offices. Thus, for example, Utu (Akkadian: Shamash), the sun god, was the judge of the gods, in charge of justice and righteousness generally.

Highest in the pantheon—and presiding in the divine assembly—ranked An (Akkadian: Anu), god of heaven, who was responsible for the calendar and the seasons as they were indicated by their appropriate stars. Next came Enlil of Nippur, god of winds and of agriculture, creator of the hoe. Enlil executed the verdicts of the divine assembly. Equal in rank to An and Enlil was the goddess Ninhursag (also known as Nintur and Ninmah), goddess of stony ground: the near mountain ranges in the east and the stony desert in the west with its wildlife—wild asses, gazelles, wild goats, etc. She was also the goddess of birth. With these was joined—seemingly secondarily—Enki (Ea), god of the sweet waters of rivers and marshes; he was the cleverest of the gods and a great troubleshooter, often appealed to by both gods and men. Enlil’s sons were the moon god Nanna (Sin); the god of thunderstorms, floods, and the plough, Ninurta; and the underworld figures Meslamtaea, Ninazu, and Ennugi. Sin’s sons were the sun god and judge of the gods, Utu; the rain god Ishkur (Akkadian: Adad); and his daughter, the goddess of war, love, and morning and evening star, Inanna (Akkadian: Ishtar). Inanna’s ill-fated young husband was the herder god Dumuzi (Akkadian: Tammuz). The dread netherworld was ruled by the goddess Ereshkigal and her husband Nergal, a figure closely related to Meslamtaea and Ninurta. Earlier tradition mentions Ninazu as her husband.

Demons played little or no role in the myths or lists of the Mesopotamian pantheon. Their domain was that of incantations. Mostly, they were depicted as outlaws; the demoness Lamashtu, for instance, was hurled from heaven by her father An because of her wickedness. The demons attacked human beings by causing all kinds of diseases and were, as a rule, viewed as wind and storm beings. Consonant with the classical view of the universe as a cosmic state, it was possible for a person to go to the law courts against the demons—i.e., to seek recourse before Utu and obtain judgments against them. Various rituals for such procedures are known.

Human origin

Two different notions about human origin seem to have been current in ancient Mesopotamian religions. Brief mentions in Sumerian texts indicate that the first human beings grew from the earth in the manner of grass and herbs. One of these texts, the “Myth of the Creation of the Hoe,” adds a few details: Enlil removed heaven from earth in order to make room for seeds to come up, and after he had created the hoe he used it to break the hard crust of earth in Uzumua (“the flesh-grower”), a place in the Temple of Inanna in Nippur. Here, out of the hole made by Enlil’s hoe, people grew forth.

The other notion presented the view that humankind was created from select “ingredients” by Enki, or by Enki and his mother Nammu, or by Enki and the birth goddess called variously Ninhursag, Nintur, and Ninmah. In the myth of “Enki and Ninmah” recounted above, Enki had humans sired by the “engendering clay of the Apsu”—i.e., of the waters underground—and borne by Nammu. The Akkadian tradition, as represented by the “Myth of Atrahasis,” had Enki advise that a god—presumably a rebel—be killed and that the birth goddess Nintur mix his flesh and blood with clay. This was done, after which 14 womb goddesses gestated the mixture and gave birth to seven human pairs. A similar—probably derived—form of this motif is found in Enuma elish, in which Enki (Ea) alone fashioned humanity out of the blood of the slain rebel leader Kingu. The creation of the human race from the blood shed by two slain gods is yet another version of the motif that appears in a bilingual myth from Ashur.

Human nature, then, is part clay (earthly) and part god (divine). The divine aspect, however, is not that of a living god but rather that of a slain, powerless divinity. The Atrahasis story relates that the eṭemmu (ghost) of the slain god was left in human flesh and thus became part of human beings. It is this originally divine part of humanity, the eṭemmu, that was believed to survive at his death and to give him a shadowy afterlife in the netherworld. No other trace of a notion of divine essence in humankind is discernible; in fact, human beings were viewed as being utterly powerless to act effectively or to succeed in anything. For anything they might wish to do or achieve, they needed the help of a personal god or goddess, some deity in the pantheon who for one reason or other had taken an interest in them and helped and protected them, for “Without his personal god a man eats not.”

About human destiny all sources agree. However they may have come into being, human beings were meant to toil in order to provide food, clothing, housing, and service for the gods, so that they, relieved of all manual labour, could live the life of a governing upper class, a landed nobility. In the scheme of existence humanity was thus never an end, always just a means.

City-state and national state

In early dynastic times, probably as far back as historians can trace its history, Mesopotamia was divided into small units, the so-called city-states, consisting of a major city with its surrounding lands. The ruler of the city—usually entitled ensi—was also in charge of the temple of the city god. The spouse of the ensi had charge of the temple of the city goddess, and the children of the ensi administered the temples of the deities who were regarded as children of the city god and the city goddesses. After the foundation of larger political units, such as leagues or empires, contributions were made to a central temple of the political unit, such as the temple of Enlil at Nippur in the Nippur league. On the other hand, however, the king or other central ruler might also contribute to the shrines of local cults. When, in the 2nd and 1st millennia bce, Babylonia and Assyria emerged as national states, their kings had responsibility for the national cult, and each monarch supervised the administration of all temples in his domain.