Those things, whether experienced in a greater or less degree, which are of the nature of visions, trances, revelations of the heavenly world or of the world of woe, revelations of future things, and the like, do not, and cannot, in themselves considered, constitute religion.
About the year 1688, a religious sect appeared in Dauphiny and Vivarais in France, and afterwards, about the year 1700, the same sect made its appearance in England, whose religious experience, in addition to, or perhaps we should rather say, in distinction from the common traits of religious experience, was characterized by trances, as they were called, in which they alleged that they saw the heavens open, and saw the angels of heaven, and saw paradise, and hell, and other things equally wonderful. Nor was this all. Their experience, in the case of a considerable number of persons, was distinguished also by prophetic views or foresights of future things. The state of trance, which can easily be explained, to a considerable degree at least, on purely natural principles, and also other states which were characterized by great physical agitation, were frequently followed by prophetic paroxysms, which when they came to the utterance, resulted either in strong and terrible denunciations, or in predictions of future events. Some interesting specimens of these prophecies are found in the Work, entitled the Prophecies of Sir John Lacy, a worthy man of some education and of irreproachable character, who was subject, in a remarkable degree, to all these forms of experience.
Count Zinzendorf, the founder of the Church of the United Brethren or the Moravian Church, as it is more usually called, that he made a visit to the Church of the Inspired in the principality of Isenberg, and obviously for the purpose of ascertaining the nature of their doctrines and exercises.
The Count, speaking of what he himself witnessed in one of their leading men, whose character and exercises he had an opportunity of studying, both at Isenberg and elsewhere, says, that “he fell into one of his inspired fits in Budingen, which I thought dreadful. The manner was this. He suddenly became violently convulsed, and at the same time he moved his head backwards and forwards with incredible rapidity. In this state he spoke certain words in a prophetic style, which were termed inspirations. They were written down, and sent to the people to whom they referred.” The Count, after having examined the doctrine in connection with the commentary of its practical exhibitions and results, says, “I had no occasion to hesitate any longer, in entirely rejecting the inspiration.”
— edited from The Life of Faith (1852) Part 1, Chapter 11.