The Mystery of God
In John's vision of the Little Book, the angel told John that the mystery of God would be finished during the sounding of the 7th Trumpet (Rev. 10:7)."But in the days of the voice of the seventh angel, when he shall begin to sound, the mystery of God should be finished, as he hath declared to his servants the prophets" (Revelation 10:7).
Understanding the meaning of the "mystery of God" helps to identify the timeframe of the 7th Trumpet. Study the meaning by visiting the page on "Participating in the Mystery of God. The evidence presented in that study, along with the many other clues in Revelation, indicate that the 7th Trumpet, which includes this finishing of the Mystery of God, encompasses the Heavenly Day of Atonement, thus starting in or prior to 1844 and ending at or sometime after the close of probation. More precise dates, as well as other monumental events that occur during the 7th Trumpet, can be identified by studying the entire prophecy of the Seven Trumpets in Revelation.
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