If the Revelation says that Jerusalem will be divided 3 ways, then it will be divided 3 ways
.
"And there were flashes of lightning and sounds and peals of thunder; and there was a great earthquake, such as there had not been since man came to be upon the earth, so great an earthquake
was it, and so mighty.
The great city was split into three parts,
and the cities of the nations fell. Babylon the great was remembered before God, to give her the cup of the wine of His fierce wrath..."Rev. 16:18, 19
This passage explains God's destructive wrath on the planet, a great city destroyed (not necessarily Jerusalem) and nations, mountains, by a huge worldwide earthquake that levels everything. This is not some division of property between religions. When Jesus reigns, there will be peace but not because of a division of property but because He will put down sin and lock up Satan and btw there will only be one religion in harmony, Christianity.
Back to the OP, peace always comes after war and one is currently brewing, this may be the one that ignites the Great Tribulation period.