It will be a event larger than 9/11 with wider repurcussions that will change our laws and liberty. Governments will be swayed as spiritual leaders declare that 'Christ has appeared' and is leading them to unite and pass laws to ensure everyone worships this "angel of light" who does 'miracles', as the last messages of warning are being proclaimed on earth. The "Three Angels' Messages" will have done their work and in his efforts to secure worldwide homage Satan, this "angel of light", will move the powers of earth to adopt the papal mark of allegiance and the Sabbath-Sunday issue will be brought into full view of the peoples of the earth. A choice will have to be made to, either worship God on his terms, or to worship the beast on his terms. Compromise will be impossible. As the conflict escalates, and laws to ensure compliance and Sunday laws are enacted at the instigation of the False Prophet, the message of warning swells to a loud cry depicted in Revelation 18 by another mighty angel repeating the message of Babylon's fall. This final message of warning also gives power to the proclamation of the third angel's message, since it in addition also warns against the acceptance of the mark of the beast.
And after these things I saw another angel come down from heaven, having great power; and the earth was lightened with his glory. And he cried mightily with a strong voice, saying, Babylon the great is fallen, is fallen, and is become the habitation of devils, and the hold of every foul spirit, and a cage of every unclean and hateful bird. For all nations have drunk of the wine of the wrath of her fornication, and the kings of the earth have committed fornication with her, and the merchants of the earth are waxed rich through the abundance of her delicacies. And I heard another voice from heaven, saying, Come out of her, my people, that ye be not partakers of her sins, and that ye receive not of her plagues. Revelation 18:1-4.
This is the final warning and the choice we make will determine whether we receive the mark of the beast or the seal of God. Which lawgiver is paramount in our lives? When the human race has made its choice, probation will close and the following solemn announcement will be made in heaven:
He that is unjust, let him be unjust still, and he which is filthy, let him be filthy still, and he that is righteous, let him be righteous still, and he that is holy, let him be holy still. And behold, I come quickly, and my reward is with me, and I will give to every man according as his work shall be. Revelation 22:11,12