How did religion influence the life of Mesopotamians?

Religion played an important role in the life of the Mesopotamians. They worshipped many gods and each city had a patron of god of its own. For example, Nannar, the Moon God was the patron god of Ur. The four most important Gods worshipped by the Sumerians were An, Enlil, Enki, and Ninhursag. These four regarded as the creator deities, who created all other Gods. One of the duties of a Mesopotamian King was to take care of Gods and build their temples. Such temples were called the "Ziggurats". Ziggurat means the "Hill of Heaven" and were mud brick temples built on artificial mounds in every city.