etrephen en megarois: ho d' aexeto daimoni isos out' oun siton edôn, ou thêsamenos ... chriesk' ambrosiêi hôs ei theou ekgegaôta
Nagy cites the Homeric Hymn to Demeter directly to demonstrate that daimoni isos describes Demophon's growth toward immortal status under Demeter's nurturance, connecting the formula to the category of hero cult and the promise of a timē that is aphthitos.
, The Best of the Achaeans: Concepts of the Hero in Archaic Greek Poetry, 1979thesis