Emanuel Swedenborg (born Emanuel Swedberg; 29 January 1688 - 29 March 1772) was a Swedish scientist, philosopher, theologian, revelator, and, in the eyes of some, Christian mystic. He termed himself a "Servant of the Lord Jesus Christ" in True Christian Religion, one of the works he published himself. He is best known for his book on the afterlife, Heaven and Hell.
Swedenborg had a prolific career as an inventor and scientist. In 1741, at the age of 53, he entered into a spiritual phase in which he eventually began to experience dreams and visions beginning on Easter weekend April 6, 1744. This culminated in a spiritual awakening, whereupon he claimed he was appointed by the Lord to write a heavenly doctrine to reform Christianity. He claimed that the Lord had opened his spiritual eyes, so that from then on he could freely visit heaven and hell, and talk with angels, demons and other spirits.
He said that the Last Judgement had already occurred, in 1757, although only visible in the spiritual world, where he had witnessed it. That Judgement was followed by the Second Coming of Jesus Christ, which occurred, not by Christ in person, but by a revelation from Him through the inner, spiritual sense of the Word to Swedenborg. In fact, Swedenborg said, it is the presence of that spiritual sense that makes the Word Divine.