We know there needs to be some sort of temple erected on Zion’s temple mount. It’s needed to fulfill the prophecies about the antichrist who, during the tribulation, ceases daily sacrifices and seats himself there declaring himself god. (2 Thessalonians 2:4).
Although I sometimes disagree with Nelson Walters’ eschatology, he has posted a video that describes a scenario whereby a kosher temple might be erected in a hurry.
Take a look at this video, as it contains some important insights. You can watch it here: https://youtu.be/FmeFKVZMeTo?si=E5eSlOHtx9nnNa7u
Maranatha, Jim
About a year ago, probably in an article on Israel 365, it was reported that the stones for the altar were already prepared and on hand. The articles stated that individual priests were assigned to carry a stone to the Temple Mount on a moment’s notice so the altar could be assembled within an hour. They must have decided to assemble it ahead of time so it could be trucked to whatever location they chose. Progress!