He alone was. The rest, like Makhir, were gods of dream. To the savants, that is; to the magi and seers. To the people the sidereal triads and planetary divinities throned in the Silver Sky augustly real, equally august, and in that celestial equality remained, until Khammurabi gave precedence to Bel, who as Marduk, Bel or Baal Marduk, Lord Marduk, became supreme.
It made little difference whether one encountered something while awake or saw it in one's dream. In fact, what one saw while asleep had as a general thing more importance. A special god of dreams, Makhir, is often referred to in the religious texts, and this is but another way of expressing the belief that the dreams were sent to a man as omens.
There was Eridu, where Ea was lord of man. There was Ur, where Sin was lord of the moon. There were other divinities. There was Enmesara, lord of the land whence none return, and Makhir, god of dreams.