What counts as Mesopotamian mythology
There was never a single, fixed “Mesopotamian religion”. The stories we call Mesopotamian mythology were written down over roughly two thousand years, in Sumerian and later in Akkadian (the Babylonian and Assyrian dialects), in many cities and under many dynasties. Gods were renamed, merged and promoted as political power moved from one city to another. A Sumerian poem about Inanna and a Babylonian hymn to Ishtar describe the same goddess in different languages and with different emphases.
Almost everything we know comes from clay tablets in cuneiform writing: hymns, myths, lamentations, ritual instructions, god lists and royal inscriptions. These sources are uneven. Some myths survive in complete copies, others only as fragments, and many tablets were copied by scribes centuries after the stories were first composed. Scholars therefore describe the pantheon with care, and some details remain debated.
How the Mesopotamians pictured their gods
The gods were largely imagined as powerful, human-like beings who ate, married, quarrelled and held households. Each major city had a patron deity who was thought to live in the temple, and the statue in the temple was cared for with daily offerings of food and drink. In this view a city belonged to its god, and the king acted as the god’s steward. This idea runs through the whole of Mesopotamian civilization, from the earliest cities to the Assyrian and Babylonian kingdoms.
The gods were also tied to natural and social forces: sky, wind, fresh water, the moon, the sun, storms, fertility, war, the underworld. Their authority was carried out through divine decrees, and a concept often called the me (Sumerian) stood for the arrangements of civilised life, such as kingship, craftsmanship and law, which the gods held and could hand over.
The great gods
Four deities usually head any survey.
- Anu (Sumerian An) is the sky. He is the distant, highest authority, associated in Uruk with the temple called the Eanna, which was later closely linked with Inanna.
- Enlil is lord of the air or wind and holds the power to decide, command and punish. His main centre was Nippur, and his temple there was called the Ekur.
- Enki (Akkadian Ea) is lord of the fresh waters below the earth, called the Abzu, and a god of wisdom, craft and cunning. His main centre was Eridu. In many stories he is the helpful god who saves humans from Enlil’s harsher decisions.
- Inanna (Akkadian Ishtar) is a goddess of love, desire and war, linked with the planet Venus. Uruk was her main centre in Sumerian times.
Around them stood many others: Nanna or Sin, the moon god of Ur; Utu or Shamash, the sun and god of justice; Ninhursag, a mother goddess; Ishkur or Adad, the storm god; and Ereshkigal, queen of the underworld. The gods were often grouped as the Anunnaki, a term whose precise meaning shifts between periods and texts, and the Igigi, a term sometimes used for the younger or working gods.
Mesopotamian myths about the underworld, with its dust and darkness and a land from which no one returns, are quite unlike the elaborate scenes of Egyptian afterlife beliefs. In Mesopotamia the dead were thought to have a gloomy, shadowy existence, though offerings by the living could make it more bearable.
Sumerian and later versions
In Sumerian sources, the cosmos begins with the primeval sea, personified as the goddess Nammu in some texts. Heaven (An) and earth (Ki) are joined, and Enlil separates them. These are the oldest layers we can read, and they differ in detail from the later Babylonian story.
Later Akkadian-speaking scholars took over Sumerian gods, kept their names in the old language for ritual use, and translated them. Anu is An, Ea is Enki, Ishtar is Inanna and Shamash is Utu. At the same time, the cities changed which god stood at the head. In Babylon, Marduk, the city’s patron, rose to the top. In Assyria, the national god Ashur held that place.
The Enuma Elish: a theogony
The best known account of how the gods were born is a Babylonian poem called the Enuma Elish, named for its opening words, usually translated “When on high”. It was written on seven tablets. Its date is debated, but it is usually placed in the later second millennium BCE, and most surviving copies are from the first millennium BCE. Ritual texts of that later period indicate that it was recited during the New Year festival in Babylon.
The poem begins before heaven and earth had names. Two waters mingle: Apsu, the sweet or fresh water, and Tiamat, the salt water, with a figure named Mummu associated with them. From this mixing the first divine pairs appear: Lahmu and Lahamu, then Anshar and Kishar, representing the horizons or the sky and earth. From them comes Anu, and then Ea, who is described as wiser and more capable than his forebears.
The younger gods are noisy and restless. Apsu, disturbed, plans to destroy them so that he can rest. Ea learns of this, puts Apsu to sleep with a spell and kills him, then builds his own dwelling over Apsu’s body. There his son Marduk is born, a god of extraordinary power whom the poem describes with striking, outsized features.
Tiamat, urged on by other gods who want revenge, creates monsters and raises up a god named Kingu as her leader and consort. The gods, afraid, look for a champion. Marduk agrees to fight, but only if the other gods accept his rule. They do so at an assembly, and he defeats Tiamat and Kingu. How he uses Tiamat’s body to shape the world, and how humans are made from Kingu’s blood, is told in the companion article on the Mesopotamian creation myth. For the theogony, what matters is the result: Marduk becomes king of the gods, receives fifty names that sum up his powers, and Babylon is founded as his seat.
It is worth noticing that the poem is both a story and a political statement. Written in Babylon, it makes Babylon’s god supreme. Scholars note that an Assyrian version replaces Marduk with Ashur, which shows how a myth could be adapted to serve a different state.
Other ways the gods were born
The Enuma Elish is only one tradition. Other texts give different accounts. In some Sumerian compositions Enlil and his consort Ninlil have a son, the moon god Nanna, after a story of courtship and punishment. Other poems treat gods as the offspring of An and Ki, or of Nammu. The relationships among gods were also recorded in long god lists that organised the pantheon like a family tree, and these lists are one reason we can match Sumerian and Akkadian names.
The result is not a single consistent genealogy but a layered body of tradition, which scholars work to reconstruct through close reading of tablets and the evidence from Mesopotamian archaeology.
Why this matters for reading later texts
Knowing the cast makes much else easier to follow. The gods drive the plot of the flood story, shape Gilgamesh’s journeys, and appear in temple hymns and in the Enheduanna poetry addressed to Inanna. Neighbouring cultures also knew Mesopotamian literature: texts from the Hittite kingdom include versions of Mesopotamian stories. Scholars still discuss how direct those links were, and comparisons with other traditions, such as the Olympian gods and monsters of Greek myth, are usually made with caution because the sources are separated by centuries.