The Sibyl occupies a peculiar and instructive position in the depth-psychological corpus: she is simultaneously a historical phenomenon requiring philological reconstruction and a symbolic figure condensing the archetype of inspired feminine prophecy. Rohde establishes the philological ground, insisting that ‘Sibyl’ and ‘Bakis’ are class-names rather than individual designations, denoting entire categories of ecstatic prophet who wandered independently of any oracular institution. Burkert situates the Sibyl within the competitive field of Greco-Roman oraculism, noting her connections to Apollo, her erotic subjugation by the god, and her transnational reach — from Erythrai to Cumae to Rome. Campbell reads the Sibylline corpus eschatologically, finding in Virgil’s invocation of the Cumaean prophecy a mythic template for cyclical time and golden-age restoration. Jung deploys the Sibyl at key moments in his alchemical hermeneutic: in the Mysterium Coniunctionis she appears as psychopomp, the feminine soul encountered by Maier on the shores of the Red Sea, who foretells Christ and mediates the encounter with the anima. Neumann reads the sibylline function structurally as the earliest mantic type — the woman-seer whose prophetic office is later masculinized. Edinger traces the Sibyl into the Dies Irae’s eschatological testimony, where she stands alongside David as a witness to the Last Judgment. Jaynes, characteristically, interprets oracular figures including the Sibyl as evidence of the breakdown of the bicameral mind. The term thus spans philology, comparative religion, archetypal psychology, and eschatology.