A lot of people may not see this, but the book of Revelation reads like a repeating rotation, like in the story of Jericho... 7 priests x 6 rotations = 42 months Compare Rev 16:20 to Rev 6:14
Revelation 16:17-21 “And the seventh angel poured out his vial into the air; and there came a great voice out of the temple of heaven, from the throne, saying, It is done.18 And there were voices, and thunders, and lightnings; and there was a great earthquake, such as was not since men were upon the earth, so mighty an earthquake, and so great.19 And the great city was divided into three parts, and the cities of the nations fell: and great Babylon came in remembrance before God, to give unto her the cup of the wine of the fierceness of his wrath.20 And every island fled away, and the mountains were not found.21 And there fell upon men a great hail out of heaven, every stone about the weight of a talent: and men blasphemed God because of the plague of the hail; for the plague thereof was exceeding great.”
Does that sound familiar? I believe that is because it sounds just like the 6th seal events, and the prophecies we just read about the Great day of God’s wrath. Even the wording there in Revelation 16:20 sounds similar to Revelation 6:14 “And the heaven departed as a scroll when it is rolled together; and every mountain and island were moved out of their places.”