She is the pre-terrestrial vision of the celestial world and is thus religion and faith avowed, the very faith which was 'chosen' by the Fravarti; she is also the essential individuality, the 'celestial' transcendent 'I,' the Figure which, at the dawn of its eternity, sets the believer face to face with the soul of his soul
Corbin's foundational definition establishes Daena as at once visionary organ, ontological light, pre-terrestrial faith, and transcendent celestial individuality confronting the soul eschatologically at the Chinvat Bridge.
, The Man of Light in Iranian Sufism, 1971thesis