Revelation 11:15-18
This last - seventh - trumpet announces the coming of Christ, the establishment of God's Kingdom, the judgment upon the nations, and the rewarding of the saints. They occur simultaneously!
The last trumpet sounds when Christ returns, not 3½ years before! If we compare verses 11-13 (the resurrection of the Two Witnesses) with verse 19, the "great earthquake" ties the resurrection of the saints with the beginning of the Kingdom (see also Revelation 16:18). In addition, an angel tells John in Revelation 10:7 that when "the seventh angel . . . is about to sound, the mystery of God would be finished." There will be no more mystery about man becoming God when the saints are resurrected or changed to eternal spirit beings!
Matthew 24:30-31 also verifies this scenario, showing that the trumpet sounds to send the angels to gather the elect from all over the earth to meet Him upon His return. To clinch the argument, verse 29 very plainly says, "Immediately after the tribulation of those days. . ."! Isaiah 27:12-13, Joel 2:1-11 and Zechariah 14:3-5, 9 also confirm these events.
Richard T. Ritenbaugh
Caught Up in the Rapture

Christ was born to be a King, yet the kingdoms of the world will not become His until the seventh trumpet sounds, a time still future. God's Kingdom will fight against and subdue those kingdoms, fulfilling the promise to David in II Samuel 7. This last trumpet announces Christ's coming, the establishment of God's Kingdom, the judgment of the nations, and the rewarding of the saints, all simultaneously at His return, not three and a half years before. The mystery of God is finished as saints are resurrected or changed to spirit beings. The church's judgment ends at this trumpet, and His active reign begins another judgment: rewarding His servants, judging the nations, and destroying "those who destroy the earth."