revelator

noun

1. A person or personified agent who reveals; especially, one who makes a divine revelation.

   “Near-synonyms: revealer; discloser, divulger; uncoverer, unveiler; discoverer; clairvoyant, seer, prophet”

   “But it was Paul to whom the Lord revealed the whole doctrine of the mystery; and we firmly believe he thus became the revelator to all men of these glorious things connected with this mystery.”

   “We noted in earlier chapters that the Twelve, beginning in Joseph Smith's day, were sustained as prophets, seers, and revelators, and that the Quorum of the Twelve were sustained as the First Presidency of the Church following the death of Brigham Young.”

   “They caught the Katy And left me a mule to ride The fortune lady Came along, she walked beside But every word seemed to date her Time's the revelator The revelator […] Queen of fakes and imitators Time's the revelator”

   “Alvin Toffler or George Gilder might have been more likely choices for back-page revelators, but Negroponte ponied up $75,000 in seed money when the Old Media barons were showing Wired founders Louis Rossetto and Jane Metcalfe the door.”