What does Revelation 16:19 mean?
We learn from this verse that the earthquake resulting from the seventh bowl judgment is felt globally. Cities worldwide collapse into rubble. Whether or not the re-arrangement of islands and mountains is global, this event is strong enough to create havoc in every part of the earth.Jerusalem is likely the location here called "the great city," and it, too, experiences the magnitude of the earthquake. It split into three sections.
Babylon also falls under God's judgment. The city is said to drain the cup of the wine of the fury of God's wrath. The imagery is significant. Revelation 17:2 charges Babylon with the sin of making the residents of earth drunk with the wine of her sexual immorality. The great earthquake that levels cities across the globe may coincide with the dividing in two of the Mount of Olives when Jesus returns to earth (Zechariah 14:4–5). Further, Babylon may be the capital of the beast's empire. Throughout biblical history Babylon is cited as the center of idolatry. It seems the city on the Euphrates River will be rebuilt in the tribulation and will incorporate demonic religions.