Going back to comments here of 3.18:
I wonder how the Biblical concept fire - as in, "you shall all be salted with fire"; "I baptize you with water; but one is coming who shall baptize you with spirit & with fire" - compares with the Romantic notion (Coleridge, Blake, maybe Yeats) of vision.
Roger Williams' parochial battles, late in life, with the Quakers & the followers of Anne Hutchinson. He advocated a kind of scriptural realism (Christ's work was a particular historical activity & event) vs. the dangers of spiritual solipsism (pride, vanity), which he believed were lurking in the Quaker's radical antinomian "inner light".
The imagination inhabits a borderland between subjective & objective.
In what way is faith dependent on imagination? A believer would say that faith proceeds from, is a gift from, the Holy Spirit. But there is a sort of co-operation between the mind/imagination and that "inspiration". The imagination as the vital activity of the mind - the "integration" of human capabilities ("personality").
Readings in Maximus (the other Maximus, the Byzantine theologian) - about the "divinisation" of mankind by means of the Spirit.
Maybe the outcome of the co-operation of Spirit & imagination is - fire.
& what is fire? Light, for one thing. The instantaneous recognition of something which represents both the limit and measure of ordinary time/space. That light of which (in the old-fashioned typological sense) physical light is the image.