Jung himself based his definition of religion on Rudolf Otto's apt term "the numinosum," which is that peculiar alteration in consciousness brought about by the ego's contact with transpersonal psychic energies which overwhelm it - whether these energies be daimonic or sublime. For Jung, the experience of the numinous was much more than the "oceanic experience," or the "primary process" described by Freud. It was not only an artefact of early infantile mental processes but a category of experience central to the deepest apprehension of human existence and central to all healing and transformation. Man and woman, for Jung, were not homo sapiens but homo religiosus.
— Donald Kalsched
Jung's correction of Freud here is surgical: the numinous is not a regression, not the infant's blurred boundary with the mother dissolved and then mourned as adult consciousness sharpens. It is a category in its own right, irreducible, belonging to the structure of psychic life rather than to its prehistory. Freud's "oceanic feeling" diagnoses the experience as residue — something left over from a developmental stage we have passed through. Jung refuses this. What overwhelms the ego in a numinous encounter is not the past flooding back; it is the soul making contact with energies that were never merely personal to begin with.
What Kalsched quietly surfaces here is the cost of that refusal. If the numinous is structural, not archaic, then you cannot explain it away by tracing it to infancy, and you cannot cure someone of needing it. Homo religiosus is not a developmental stage to outgrow. The soul oriented toward something beyond itself is not pathological longing in disguise — though it can, of course, become that, and the history of spirituality is largely the history of that becoming. The question the passage presses, without quite asking it, is whether contact with the numinosum actually transforms anything, or whether the encounter is itself the bypass — the daimonic or the sublime functioning as a route around the suffering it was supposed to illuminate.
Donald Kalsched·The Inner World of Trauma: Archetypal Defences of the Personal Spirit·1996