Sumerian, Then Akkadian, Then Both Together

Mesopotamian religion spans multiple distinct civilizations and languages across roughly two millennia of recorded history, from Sumerian city-states through Akkadian, Babylonian and Assyrian political dominance, with religious continuity maintained across these transitions even as the dominant spoken and written language shifted, so that later Babylonian and Assyrian scribes continued copying and studying Sumerian religious texts as a kind of learned, semi-liturgical language long after Sumerian had ceased to be anyone's native spoken tongue, a situation scholars have compared to the continued use of Latin in later Western Christian liturgy after Latin ceased to be a widely spoken vernacular. This layered linguistic history means Mesopotamian prayer as a corpus includes both genuinely ancient Sumerian compositions, such as the Exaltation of Inanna attributed to Enheduanna, and later Akkadian-language material, such as the Great Hymn to Shamash, that draws on but also develops considerably beyond that earlier Sumerian religious foundation, making chronological and linguistic care essential to any accurate discussion of specific texts within the broader corpus.

Akkadian itself later split into Babylonian and Assyrian dialects as political power shifted between southern and northern Mesopotamia, and religious texts composed in each dialect sometimes reflect the specific regional and political concerns of the state that produced them, a further layer of internal variation within the broader corpus beyond the basic Sumerian to Akkadian linguistic transition.