John Gill

Thus saith the Lord, he that remaineth in this city,.... Of Jerusalem; that does not go out of it, and surrender himself to the Chaldeans; but continues in it fighting against them: shall die by the sword, by the famine, and by the pestilence; that is, by one or other of these: but he that goeth forth to the Chaldeans shall live: that goes out of the city, throws down his arms, delivers up himself to the Chaldean army, and submits to their mercy, shall have quarters given him, and his life shall be spared: for he shall have his life for a prey, and shall live; or, "his soul, and it shall live" (n); comfortably and in safety; he shall escape with his life, and that shall be preserved from the sword, famine, and pestilence; and whereas it was, as it were, lost, it shall be recovered out of the jaws of death, out of the above calamities it was exposed to; and so be like a prey taken out of the hands of the mighty, and be quite safe. (n) "et erit illi anima ejus in praedam et vivet", Junius & Tremellius, Piscator, Cocceius, Schmidt.