Within the depth-psychology corpus, ‘Son’ operates simultaneously across at least four registers: the theological, the archetypal, the developmental, and the mythological. In the theological register—represented most extensively by John of Damascus and the Hilary of Poitiers material preserved in his collection—the Son names the second Person of the Trinity, begotten not made, co-eternal and co-essential with the Father, the doctrinal precision of which becomes a template for thinking relations of origin without subordination. Jung imports precisely this trinitarian logic into analytical psychology, reading the ‘Son’ symbol as the archetype of differentiated consciousness that must separate from the father-habitus through moral discrimination rather than violent identification. Edinger deepens this by tracking the ‘Son of Man’ as a polysemous symbol uniting the personalistic, archetypal-Anthropos, messianic, and eschatological vectors. Hillman and von Franz attend to the shadow-side of the son position: its entanglement with the Great Mother, its oscillation between the puer and the hero, and its structural inability to father itself when severed from the senex. Neumann situates the son cosmogonically, torn between the elemental parents above and below. Together these voices make ‘Son’ one of the most overdetermined terms in the library—a node where Trinitarian theology, Oedipal dynamics, individuation theory, and cultural mythology converge and contest one another.