Rev 14:8

8 Another, a second angel, followed, saying, “Babylon the great has fallen, which has made all the nations to drink of the wine of the wrath of her immorality.” 

another Angel, a second one – the judgment intensifies as time passes.

Fallen, fallen is Babylon the Great – this phrase is from Isa 21:9; the Angel is calling the saints to come out of the false religion of the beast, as in Rev 18:2.