Revelation 6:15-17, "And the kings of the earth, and the great men, and the rich men, and the chief captains, and the mighty men, and every bondman, and every free man, hid themselves in dens, and among the rocks of the mountains, And said to the mountains and rocks, Fall on us, and hide us from the presence of him that sitteth on the throne, and from the wrath of the Lamb. For the great day of his wrath is come, and who can stand?"
All their preparations won't do them any good if my Bible is correct, and it always is!
I’ve long said that, without a military, the best that prepping will allow is a longer provision period for only a few months.
If what happens goes beyond that, there is no amount of prepping that you could do to protect yourself.