light which attended this angel penetrated everywhere, as he cried mightily, with a strong voice, “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.” The message of the fall of Babylon, as given by the second angel, is repeated, with the additional mention of the corruptions which have been entering the churches since 1844. The work of this angel comes in at the right time to join in the last great work of the third angel's message as it swells to a loud cry. And the people of God are thus prepared to stand in the hour of temptation, which they are soon to meet. I saw a great light resting upon them, and they united to fearlessly proclaim the third angel's message. EW 277.1 Angels were sent to aid the mighty angel from heaven, and I heard voices which seemed to sound everywhere, “Come out of her, My people, that ye be not partakers of her sins, and that ye receive not of her p…
"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."
The EGW passage directly quotes and expands upon Revelation 18:2, explicitly referencing the fall of Babylon and its association with demonic influence.