בְּיוֹם֙ עֲמָֽדְךָ֣ מִנֶּ֔גֶד בְּי֛וֹם שְׁב֥וֹת זָרִ֖ים חֵיל֑וֹ וְנָכְרִ֞ים בָּ֣אוּ שערו [שְׁעָרָ֗יו] וְעַל־יְרוּשָׁלִַ֙ם֙ יַדּ֣וּ גוֹרָ֔ל גַּם־אַתָּ֖ה כְּאַחַ֥ד מֵהֶֽם׃
네가 멀리 섰던 날 곧 이방인이 그의 재물을 늑탈하며 외국인이 그의 성문에 들어가서 예루살렘을 얻기 위하여 제비뽑던 날에 너도 그들 중 한 사람 같았었느니라
Rashi
you, too, are like one of them—I account it for you as though you were one of their attackers.
Tze'enah Ure'enah
“On the day that you stood aside, on the day when foreigners carried off” [1:11]. When the evil Titus came against Israel and Jerusalem, Edom rejoiced and also stood on the side to insult Israel and gave Israel into the hands of the people from the city of Rome. You Edom should have helped Israel, since they are your brothers. The Holy One had forbidden in the desert, with Moses our Teacher, that Israel should not do any evil acts to Edom because they are your brothers. During the destruction of Jerusalem, Edom did not think about this brotherhood.6Radak, Obadiah, 1:11.