What is the meaning of Luke 21:21?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

Then let those who are in Judea flee to the mountains, let those in the city get out, and let those in the country stay out of the city.

Berean Standard Bible (BSB)

Then let those who are in Judea flee to the mountains. Let those who are in the midst of her depart. Let those who are in the country not enter therein.

World English Bible (WEB)

Then{G5119} let them{G5343} which are in{G1722} Judaea{G2449} flee{G5343}{(G5720)} to{G1519} the mountains{G3735}; and{G2532} let them{G1633} which are in{G1722} the midst{G3319} of it{G846} depart out{G1633}{(G5720)}; and{G2532} let{G1525} not{G3361} them that are in{G1722} the countries{G5561} enter{G1525}{(G5737)} thereinto{G1519}{G846}.

Strong's King James

(21) At that time, ones in Judea (Praise Yah) must flee into the mountains and those in her middle must go out and ones in the country mustn't enter into her.

The F.O.G*

[21] Then those in Judea must flee to the mountains! Those in the city must get out quickly! Those in the countryside must not return to the city!

The F.O.G Paraphrase

then those in Judea, let them flee to the mountains; and those in her midst, let them depart out; and those in the countries, let them not come in to her;

Young's Literal Translation