כִּי כַּאֲשֶׁר שְׁתִיתֶם עַל הַר קָדְשִׁי יִשְׁתּוּ כָל הַגּוֹיִם תָּמִיד וְשָׁתוּ וְלָעוּ וְהָיוּ כְּלוֹא הָיוּ
Just as you drank on account of My holy mountain, so shall all the nations drink constantly. They will drink and be stunned and they will be as though they had not been.
The prophet Obadiah was a convert from the nation of Edom, who were descendants of Esau and the spiritual (if not literal) forebears of the Roman empire. Obadiah prophesized regarding their ultimate fate. The Radak explains this verse as follows: the Romans raised their glasses and rejoiced over the destruction of the Temple. Ultimately, they would be destroyed to such an extent that the places they inhabit would be completely unrecognizable. It would be as if they had never even existed.