Many people would find it hard to believe that the Catholic Church, which is known for its outreach and social contributions, is an organization of Satan. Similarly, it's hard to believe that the Church of God is a second organization of Satan. The reason people don't believe this is because the spiritual world cannot be seen or understood with human eyes and knowledge. The only way to know who Satan really is is through biblical prophecy, and prophecy is like a light in the darkness.

[2 Peter 1:19] And we have a more sure prophecy, which is as a light that shineth in a dark place.

So if you don't know the history of physical Israel, you can't know the history of spiritual Israel, and if you don't understand the book of Daniel, where the history of physical Israel is sealed, you can't understand the book of Revelation, where the history of spiritual Israel is written. When the sealed prophecies of the Bible are opened, the reality of Satan is revealed, and Revelation 18 testifies to this.

[Revelation 18:1~2] 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.

In the passage above, Satan's identity is revealed because of the great power of the angel from heaven, the ministry of the two witnesses. God gave the two witnesses the ability to prophesy, and this is how Satan's identity is revealed.

[Revelation 11:3] And I will give power unto my two witnesses, and they shall prophesy a thousand two hundred and threescore days, clothed in sackcloth.

Therefore, authoritative angels from heaven are two witnesses who reveal Satan's identity through the prophetic words God has given them. The two witnesses reveal Satan's identity. The reason there are so many of God's people in God's church is because it is Satan's den, and Satan makes God's people his servants and slaves, so where Satan is, there are God's people.

[ Revelation 18:4~10]  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....(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....(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.

Satan says that he will never be destroyed because he is sitting as empress and is not a widow, which means that he is confident that his brainwashing of believers will not be undone even if Bible prophecies are opened and their true nature revealed. But in a moment there will be death and sorrow and tribulation, because many will see the resurrection and ascension of the two witnesses and will depart from the church of God, knowing its reality. The Church of God, which appeared to be a solid castle that would never fall, would crumble in an instant upon the resurrection and ascension of the two witnesses, which is why it is described as falling in a day. Thus, the fanatical followers would be disheartened and afraid to see the Church of God fall, which the merchants of the earth (sango) testified that they would mourn and tremble for fear of the calamity that would befall them.

[Revelation 18:11~15] And the merchants of the earth shall weep and mourn over her; for no man buyeth their merchandise any more: The merchandise of gold, and silver, and precious stones, and of pearls, and fine linen, and purple, and silk, and scarlet, and all thyine wood, and all manner vessels of ivory, and all manner vessels of most precious wood, and of brass, and iron, and marble,..(15) The merchants of these things, which were made rich by her, shall stand afar off for the fear of her torment, weeping and wailing,

It also depicted God's church as being destroyed in an instant by a stone falling from heaven to fulfill the prophecy of the stone from the mountain foretold in Daniel 2.

[Revelation 18:21] And a mighty angel took up a stone like a great millstone, and cast it into the sea, saying, Thus with violence shall that great city Babylon be thrown down, and shall be found no more at all.

In Daniel 2, during the time of the ten kings, a stone from the mountain breaks down a huge idol made of gold, silver, brass, and iron, referring to the resurrection and ascension of the two witnesses, which means that not only the church of God will be destroyed, but also all the churches of this world depicted as gold (Babylon), silver (Medes and Persians), brass (Greece), and iron (Rome).