This paper explores the genealogy of cosmism, tracing its intellectual roots to religious conceptions of human destiny and humanity's salvific role within nature, focusing on German Idealism and F.W.J. Schelling in particular. While contemporary cosmist thought is often studied as a secular ideology, my contention is that its core features derive from a rich tradition of Western religious and philosophical speculation about the relationship between humanity, nature, and the divine. My analysis departs from four defining characteristics of cosmist thought: the perceived deficiency of material nature, the existence of a cosmic telos, humanity's dual status as product and agent of cosmic processes, and the identification of human purpose with cosmic destiny. These features distinguish cosmism from dominant Western thought, which views nature as separate from humanity's spiritual destiny. In German Idealism, by contrast, humanity's purpose is intimately related to nature as a whole: the creative process of nature gives rise to human beings, who are tasked with completing a process of cosmic fulfillment. In F.W.J. Schelling's works, we find a vision of humanity as "redeemer of nature." Schelling conceived material nature as existing in a fallen state, awaiting spiritual transfiguration through which humanity, nature, and God will achieve ultimate unity—a theogonic process culminating in a state where God is all in all. I conclude by suggesting that from Schelling's proto-cosmist ideas we can draw a lineage back to German theosophical sources and forward to Russian Cosmism and contemporary Silicon Valley thinkers, revealing that transhumanist and cosmist aspirations represent not a rupture with religious tradition but a transformation of deeply rooted themes concerning cosmic destiny and redemption.