Adam Clarke on Obadiah 1:5

If thieves came to thee - That is, if thieves entered thy dwellings, they would not have taken every thing; they would have laid hold on thy wealth; and carried off as much as they could escape with conveniently; if grape-gatherers entered thy vineyards, they would not have taken every bunch; some gleanings would have been left. But the Chaldeans have stripped thee bare; they have searched out all thy hidden things, Oba 1:6, they have left thee nothing. Hour art thou cut off! Thou art totally and irretrievably ruined! The prophet speaks of this desolation as if it had already taken place.