History of the Ancient Sumerians

The religion of the ancient Sumerians has left its mark on the entire middle east. Not only are its temples and ziggurats scattered about the region, but the literature, cosmogony and rituals influenced their neighbors to such an extent that we can see echoes of Sumer in the Judeo-Christian-Islamic tradition today. From these ancient temples, and to a greater extent, through cuneiform writings of hymns, myths, lamentations, and incantations, archaeologists and mythographers afford the modern reader a glimpse into the religious world of the Sumerians.

http://realhistoryww.com/world_history/ancient/Misc/Sumer/Sumerian_Religion.htm