This was already explained earlier. Those who proclaim their message will be killed by the beasts of Revalations 13 which has pawer to put them to death.
Revelation 13
15, And he had power to give life unto the image of the beast, that the image of the beast should both speak, and cause that as many as would not worship the image of the beast should be killed.
No one will BELIEVE the OLD AND NEW TESTAMEMENT Witnesses of DANIEL (OLD) and JOHN REVELATIONS (NEW) Together they make up the TESTIMONY OF JESUS CHRIST THAT GOD'S SAINT PROCLAIM that the DRAGON is making WAR with. They have the SPIRIT OF PROPHECY. That is God's people understand the END DAY EVENT of the TESTIMONY of JESUS given to Daniel and John.
Revelations 12
17, And the dragon was wroth with the woman, and went to make war with the remnant of her seed, which keep the commandments of God, and have the testimony of Jesus Christ.
links to........
Revelation 14
6, And I saw another angel fly in the midst of heaven, (THE MESSAGE OF THE SAINT) having the everlasting gospel to preach unto them that dwell on the earth, and to every nation, and kindred, and tongue, and people,
7, Saying with a loud voice, Fear God, and give glory to him; for the hour of his judgment is come: and worship him that made heaven, and earth, and the sea, and the fountains of waters.
8, And there followed another angel, saying, (THE MESSAGE OF THE SAINT) Babylon is fallen, is fallen, that great city, because she made all nations drink of the wine of the wrath of her fornication.
9, And the third angel followed them, saying with a loud voice, (THE MESSAGE OF THE SAINT)If any man worship the beast and his image, and receive his mark in his forehead, or in his hand,
10, The same shall drink of the wine of the wrath of God, which is poured out without mixture into the cup of his indignation; and he shall be tormented with fire and brimstone in the presence of the holy angels, and in the presence of the Lamb:
11, And the smoke of their torment ascendeth up for ever and ever: and they have no rest day nor night, who worship the beast and his image, and whosoever receiveth the mark of his name.
12, Here is the patience of the saints: here are they that keep the commandments of God, and the faith of Jesus.
God's WORD says the TESTIMONY of JESUS is the SPIRIT of PROPHECY; GOD'S PEOPLE UNDERSTAND THE PROPHECIES.......
Revelation 19
10, And I fell at his feet to worship him. And he said unto me, See thou do it not: I am thy fellowservant, and of thy brethren that have the testimony of Jesus: worship God: for the testimony of Jesus is the spirit of prophecy.
4th ANGELS MESSAGE...
Revelation 18
1, And after these things I saw another angel come down from heaven, having great power; and the earth was lightened with his glory.
2, 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.
3, 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.
4, 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.
5, For her sins have reached unto heaven, and God hath remembered her iniquities.
6, Reward her even as she rewarded you, and double unto her double according to her works: in the cup which she hath filled fill to her double.
7, How much she hath glorified herself, and lived deliciously, so much torment and sorrow give her: for she saith in her heart, I sit a queen, and am no widow, and shall see no sorrow.
8, Therefore shall her plagues come in one day, death, and mourning, and famine; and she shall be utterly burned with fire: for strong is the Lord God who judgeth her.
9, And the kings of the earth, who have committed fornication and lived deliciously with her, shall bewail her, and lament for her, when they shall see the smoke of her burning,
10, Standing afar off for the fear of her torment, saying, Alas, alas, that great city Babylon, that mighty city! for in one hour is thy judgment come.
Just a taste.....