I found this interesting:
” . . . [T]he very point of [Edwards] preaching was to touch the affections, to bring people beyond a merely theoretical knowledge of spiritual realities. To do so, he wanted them to form ‘lively pictures’ of the truth in their mind, so they would have to confront them and react affectively toward them. He believed it proper for people to be placed in ‘great terrors, through fear of hell’ by impressing on their minds ‘lively ideas of a dreadful furnace.’ Or people might be affected by Christ’s death by forming ‘a lively idea of Christ hanging upon the cross, and of his blood running from his wounds.’
“Such intense spiritual affections could easily be confused with more sensational religious impulses. In a few instances Edwards’ parishioners had visions that he found ‘mysterious’ and did not know how to evaluate. Nonetheless, he took great pains to teach them the distinction between true biblically based experiences and undisciplined imaginations. As he emphasized in A Divine and Supernatural Light, the spiritual light provides qualitative knowledge but no truths beyond Scripture.”*
*George Marsden, Jonathan Edwards: A Life (New Haven: Yale, 2003), 162.