Neither let him who is in the field return back to take his clothes.
All Commentaries on Matthew 24:18 Go To Matthew 24
For since it had fallen out, that they often had recovered themselves in grievous wars, as under Sennacherib, under Antiochus again (for when at that time also, armies had come in upon them, and the temple had been seized beforehand, the Maccabees rallying gave their affairs an opposite turn); in order then that they might not now also suspect this, that there would be any such change, He forbids them all thought of the kind. For it were well, says He, to escape henceforth with one's naked body. Therefore them also that are on the housetop, He suffers not to enter into the house to take their clothes, indicating the evils to be inevitable, and the calamity without end, and that it must needs be that he that was involved therein should surely perish. Therefore He adds also, him that is in the field, saying, neither let this man turn back to take his clothes. For if they that are in doors flee, much more they that are out of doors ought not to take refuge within.