random person said in post 1:
Why Jerusalem Was The Babylonian harlot!
Note that while the corrupt aspects of 1st century AD Jerusalem are included in what Revelation's symbolic "Babylon" (Revelation chapters 17-18) represents, it represents much more than just the corrupt aspects of 1st century Jerusalem. For 1st century Jerusalem just by itself didn't reign over the kings of the earth (Revelation 17:18). Nor was 1st century Jerusalem the only place where people bought merchandise (Revelation 18:11). Nor did 1st century Jerusalem just by itself corrupt the entire world (Revelation 18:3). Nor had 1st century Jerusalem been continuously supported by the empires of fallen man throughout history (Revelation 17:9-10). Instead, Revelation's symbolic "Babylon" represents all of mankind's corrupt political (Revelation 17:18), economic (Revelation 18:11), and religious (Revelation 18:24) systems throughout the earth (Revelation 18:3), and throughout history (Revelation 17:9-10).
In Revelation 11:8, the great city is Jerusalem, where Jesus was crucified. But in Revelation 21:10, the great city is New Jerusalem, which is now in heaven. And in Revelation 14:8, Revelation 17:18, and Revelation 18:10-21, the great city is the symbolic harlot/city of Babylon. When it's destroyed, it will be found no more at all (Revelation 18:21), forever (Revelation 19:3), unlike Jerusalem, which was found again after its only-temporary destruction in 70 AD.
The 10 kings of the Antichrist's empire will destroy with fire what Revelation's "Babylon" represents (Revelation 17:16-17) when they destroy the cities of the earth (Revelation 16:19), probably with nukes (and probably with Fission-Fusion-Fission, "FFF", or "666", nukes, "F" representing the number six in English gematria), at the time of the 7th vial (Revelation 16:17,19), which will be the final event (Revelation 16:17) of the future tribulation of Revelation chapters 6 to 18 and Matthew 24, right before Jesus' 2nd coming (Revelation 19:2 to 20:6, Matthew 24:29-31). They could do this under the direction of Lucifer/Satan (Isaiah 14:17,12), who could want to leave only a literal "scorched earth" for Jesus to return to.
Near the very end of the future tribulation, Lucifer (employing the ancient lies of Gnosticism) could say to the Antichrist and his 10 kings something like:
"Our great battle against the evil, tyrant god YHWH is about to begin [Revelation 16:14, Revelation 19:19], a battle which we will win, and so we will be able to escape YHWH's prison house, this material universe, and return to the wholly-spiritual Pleroma [i.e. Heaven]. So let us now destroy this prison cell, this foul planet, and let us, as it were, burn up all the gewgaws which we have hung upon our cell walls. Let us burn up all our great cities, all our magnificent systems. Let us break all our chains of attachment to this vile physical realm, that we might more freely ascend back to our rightful place in the Pleroma [Isaiah 14:13-14]".
Of course this will be a lie. For at his 2nd coming, Jesus (who is YHWH: John 10:30, Zechariah 14:3-4) will completely defeat the world's armies, arrayed against YHWH (Revelation 16:14, Revelation 19:19-21). And Jesus will have Lucifer bound in the bottomless pit during the subsequent 1,000 years (Revelation 20:1-6, Isaiah 14:15). And Jesus will restore ruined parts of the earth and make them like the Garden of Eden (Ezekiel 36:35, Isaiah 51:3). And after the 1,000 years and subsequent events (Revelation 20:7-15), God will create a new heaven (a new first heaven, a new sky/atmosphere for the earth) and a new earth (a new surface for the earth) (Revelation 21:1). And then God will descend from the 3rd heaven in the literal city of New Jerusalem to live with saved humanity on the new earth (Revelation 21:2-4).
random person said in post 1:
The appellation "the harlot" is an established label for Jerusalem from the Old Testament (c.f. Isa. 1:21; 57:8; Jer. 2:2, 20); it could never be applied to Rome or any Gentile city, since they have never been in a covenant relationship with God.
Verses like Isaiah 1:21 calling Jerusalem a "harlot" doesn't require that Jerusalem alone must be the entirety of what the symbolic harlot "Babylon" in Revelation chapters 17-18 represents, just as, for example, Nahum 3:4 doesn't require that Nineveh alone (Nahum 1:1) is the entirety of Revelation's "Babylon". Similarly, Isaiah 23:15-16 doesn't require that Tyre alone is the entirety of Revelation's "Babylon". And Ezekiel 23:4-8,44 doesn't require that Samaria alone is the entirety of Revelation's "Babylon". And Jeremiah 3:6-7 and Hosea 4:15 don't require that the northern kingdom of Israel alone is the entirety of Revelation's "Babylon". And Ezekiel 20:30 and Ezekiel 43:7 don't require that the house of Israel alone is the entirety of Revelation's "Babylon". And Hosea 5:3 and Hosea 6:10 don't require that Ephraim alone is the entirety of Revelation's "Babylon". Instead, the corrupt aspects of all of these and of all other cities and nations throughout the earth and throughout history can be included as only parts of what Revelation's "Babylon" represents.