In the wildly popular Pre-Tribulation scenario, the “left-behind” must fend for themselves for a period of seven years of great tribulation. Too bad for them. Hope they find our books and movies! What else could we do to help?
In the likewise popular Pre-Wrath scenario, the “left-behind” are pretty much on their own for the bulk of a three and a half year great-tribulation. Same story as the Pre-Trib folks but only for half the duration, as if that would help.
Here is the reality of the “left-behind” in the Peri-Armageddon scenario: very soon after day 45 of the evacuation, and whatever blessing that day brings for the unmarked survivors, the global society of the marked will begin their death spiral as the pathways to Armageddon open wide (plague six—Revelation 16:12-16).
Meanwhile, the survivors will be settling into a routine of endurance: two men will be walking through a field looking for some food; two women will be at a shelter grinding some grain for a meal. When the Son of Man makes his appearance with an army of angels, one will be taken (raptured) and the other left behind, (Matthew 24:40-41).
It is a good thing that the Lord is bringing an army of angels with him, as one of their tasks will be to protect survivors from Plague 7 (Revelation 16:18, 21), a great global earthquake and deadly, colossal hailstones. Once the last plague is passed, (and all of the marked society has been destroyed one way or another), then the angels shall communicate to the survivors what is expected of them if they would live abundant and peaceful lives: “And it shall come to pass, that every one that is left of all the nations which came against Jerusalem shall even go up from year to year to worship the King, the Lord of Hosts, and to keep the feast of tabernacles” [Zechariah 14:16].
So, for about 49 weeks of the year, survivors—the left behind—can go about their business of recovering and rebuilding. The rest of the time, they will join their fellow-survivors in harmony to make the annual pilgrimage, to partake of the feast in honor of Him who spared them through the wilderness of the great-tribulation.
I have little doubt that having recently seen the Son of Man appear and having been shown much mercy in a desperate hour, that they will have no greater interest than making the trip to Jerusalem once a year.
Some speculation would be warranted regarding the timing of the first feast. Will it coincide with the end of the great tribulation, or will it continue according to traditional timing?
Regardless of timing though, it can be assumed that if Joe-Blow from Idaho could not physically make it to the first feast because of transportation difficulties, that he would, if he so desired to go, be transported via Angel Airlines.
It stands to reason that the survivors will have a choice in the early years: either start from Jerusalem and work back towards home while repairing roads, bridges, etc. along the way; or, go home after the feast and begin making the way to Jerusalem for the next feast. Either way, during the Millennial Kingdom all roads lead to/from Jerusalem, the city of the King.