When the Romans essentially exiled all the Jews from the Levant, I rather imagine the church in Jerusalem suffered a severe loss of membership. So it probably - as a congregation - moved elsewhere. .....
"...“But when ye see Jerusalem compassed with armies, then know that her desolation is at hand. Then let them that are in Judaea flee unto the mountains; and let them that are in the midst of her depart out; and let not them that are in the country enter therein. For these are days of vengeance, that all things which are written may be fulfilled. Woe unto them that are with child and to them that give suck in those days! for there shall be great distress upon the land, and wrath unto this people.” Lu 21:20-23
[the corresponding passages in Mt & Mk reads ' the abomination of desolation' in lieu of 'armies']
To paraphrase: “When Jerusalem gets surrounded by armies, run for the hills. Leave the country, get out of the city, and don't go back.”
How do you get out of a city that's surrounded by armies?
By divine providence, that's how......"
"...Note by translator of the history, William Whiston:
"There may be another very important and very providential reason assigned for this strange and foolish retreat of Cestius, which, if Josephus had been at the time of writing his history a Christian, he might probably have taken notice of also; and that is the opportunity afforded the Jewish Christians in the city, of calling to mind the prediction and caution given them by Christ that 'when they should see the abomination of desolation' (the idolatrous Roman armies, with the images of their idols in their ensigns) ready to lay Jerusalem desolate, 'stand where it ought not,' or 'in the holy place'; or 'when they should see Jerusalem encompassed with armies,' they should then 'flee to the mountains.' By complying with which,
those Jewish Christians fled to the mountains of Perea, and escaped this destruction. Nor was there perhaps any one instance of a more unpolitic, but more providential conduct, than this retreat of Cestius visible during this whole siege of Jerusalem, which (siege) was providentially such a 'great tribulation as has not been from the beginning of the world to that time; no, nor ever should be'.”
John Gill, on Matthew 24:16:
"...it is remarked by several interpreters, and which Josephus takes notice of with surprise, that Cestius Gallus having advanced with his army to Jerusalem, and besieged it, on a sudden without any cause, raised the siege, and withdrew his army, when the city might have been easily taken; by which means a signal was made, and an opportunity given to the Christians, to make their escape: which they accordingly did, and went over to Jordan, as Eusebius says, to a place called Pella; so that
when Titus came a few months after, there was not a Christian in the city . . "...."
When You See Jerusalem Surrounded.....
When you look at the type pointed to in Rev 11:8, the exodus of the righteous from Sodom doesn't seem to have ended well, with his daughters committing incest with Lot from which sprang forth Moab and Ammon.