Spenta Mainyu — Holy Spirit, Creative Emanation

Spenta Mainyu, the 'Bounteous Spirit' or 'Holy Creative Force,' is the emanation through which Ahura Mazda brings all good creation into being. In Yasna 30.3-5, the Gathas describe the foundational choice (the 'Twin Spirits' passage) in which Spenta Mainyu and Angra Mainyu freely choose, respectively, Asha (Truth) and Druj (the Lie), establishing the moral structure of the cosmos. Spenta Mainyu is not a separate deity but the creative, life-giving aspect of Ahura Mazda himself — the dynamic outpouring through which menog (spiritual) reality manifests as getig (material) existence. In later Pahlavi theology, Spenta Mainyu becomes identified with Ohrmazd's active will, the boundless generative force that sustains creation against the assault of Ahriman.