a sacred marriage, hieros gamos. In fact, as far as Greece is concerned, the evidence is scanty and unclear. A tradition of sacred marriage exists in the Ancient Near East: the Sumerian king is the lover of the Great Goddess
Burkert establishes the historical parameters of the sacred marriage institution, distinguishing the well-attested Near Eastern practice from the more ambiguous Greek evidence, and cataloguing its forms from royal-divine union to sacral prostitution.
, Greek Religion: Archaic and Classical, 1977thesis