The spiritual and divine light does not consist in any impression made upon the imagination. It is no impression upon the mind, as though one saw anything with the bodily eyes: it is no imagination or idea of an outward light or glory, or any beauty of form or countenance, or a visible luster or brightness of any object. The imagination may be strongly impressed with such things; but this is not spiritual light. Indeed when the mind has a lively discovery of spiritual things, and is greatly affected by the power of divine light, it may, and probably very commonly doth, much affect the imagination; so that the impressions of an outward beauty of brightness may accompany those spiritual discoveries. But spiritual light is not that impression upon the imagination, but an exceeding different thing from it, Natural men may have lively impressions on their imaginations; and we cannot determine. But the devil, who transforms himself into an angel of light, may cause imaginations of an outward beauty, or visible glory, and of sound and speeches, and other such things; but these are things of a vastly inferior nature to spiritual light.

Jonathan Edwards