Naram-Sin of Akkad
The Tummal Inscription records the first king to build a temple to Enlil as Enmebaragesi, the predecessor of Gilgamesh, around 2500 BC. Ekur is generally associated with the temple at Nippur restored by Naram-Sin of Akkad and Shar-Kali-Sharri during the Akkadian Empire. It is also the later name of the temple of Assur rebuilt by Shalmaneser I. The word can also refer to the chapel of Enlil in the temple of Ninimma at Nippur. It is also mentioned in the Inscription of Gaddas as a temple of Enlil built "outside Babylon", possibly referring to the Enamtila in west Babylon. It is used as part of such Sumerian phrases as "e-kur-igi-gal"; "House, Mountain Endowed with Sight", "e-kur-igi-bar-ra"; "House, Mountain which Sees", "e-kur-mah"; "House, Exalted Mountain", "e-kur-mah"; a temple of Ninazu, "e-kur-me-sikil"; "House, Mountain of Pure Mes (laws or judgement)" - a sanctuary of Ishtar, "e-kur-nam-ti-la"; "House, Mountain of Life", "e-kur-ni-zu"; "House, Fearsome Mountain" - the sanctuary of Ninlil at hursag-kala-ma (likely a later name of e-hursag-kalam-ma), etc.