Zechariah 11:2 - Matthew Poole's English Annotations on the Holy Bible

Howl, fir tree; either mean men, or houses and towns built with firs. For the cedar is fallen; the greater and better escape not, much less shall the meaner and worse. Because the mighty is spoiled; howl because the mighty men, cities, fortresses, and munitions are taken, sacked, and ruined; or else held by enemies, which is worse, and of defences and safety to us, are become our greatest annoyances and dangers. Oaks of Bashan; oaks either literally, as they were used in that country, for building palaces, cities, towns, and fortresses; or else figuratively, the great men of that country, a land very fruitful and pleasant, of which Nahum 1:4. The forest of the vintage; either all strong places which were for guarding and defending the vineyards; or Jerusalem itself, compared to a forest in regard of the many and tall houses in it; this best pleaseth most interpreters. In short, all are called to weep, and cry, and howl for the miseries that will come upon all sorts, high and low, on-them and theirs. Is come down; is laid desolate.