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

The sounding of the seventh trumpet, as described in Revelation 11:15, heralds the moment when the kingdoms of this world become the kingdoms of our Lord and His Christ, who shall reign forever. This trumpet announces Christ's return, the establishment of God's Kingdom, the judgment of nations, and the rewarding of the saints, all occurring simultaneously. It marks the end of mystery, as man becomes eternal spirit beings through resurrection or change. The great earthquake links the resurrection of the saints with the Kingdom's beginning. This event, occurring immediately after the tribulation, signifies the time when Christ, born to be King, subdues all worldly kingdoms.