Man and Sin by Piet Schoonenberg (1964) 1.4M2

Summary of text [comment] page 22

[I suspect that a similar pattern eventually established Enlil as the sovereign god of Nippur (addressed in chapter 1 of An Archaeology of the Fall).

Shamans of the waters-above god and of the waters-below goddess established a sovereign to meet one of the proper exercises of sovereign power.

This humble establishment served as a site for contesting power.

Eventually, the old shamans (who built character, not organizations) were displaced as an infrasovereign “devotion to Enlil” pursued sovereign power.  This infrasovereign cult appealed to many because it accomplished organizational objectives.

Canals had to be dug and cleaned out.  Monumental architecture had to be built.

Crucially, both palace and temple owned the organizational objects of the Public Cult of Nippur.]