Amos 1:11

For three transgressions of Edom - That the Edomites (notwithstanding what Calmet observes above of the brotherly covenant) were always implacable enemies of the Jews, is well known; but most probably that which the prophet has in view was the part they took in distressing the Jews when Jerusalem was besieged, and finally taken, by the Chaldeans. See Obadiah 1:11-14 ; Ezekiel 25:12 ; Ezekiel 35:5 ; Psalm 137:7 .