I. Ancient Orient
The religion of Mesopotamia is characterized by a system of tutelary deities for the numerous city settlements that has its origin in the Sumerian religion of the 4th millennium BC. There is evidence of the existence and worship of city deities from the 3rd to the 1st millennium. Individual city deities achieved supraregional importance in the course of history (e.g. Assur ; Enlil; Ištar, Marduk; Nabû).