Thus saith the LORD; For three transgressions of Edom, and for four, I will not turn away the punishment thereof; because he did pursue his brother with the sword, and did cast off all pity, and his anger did tear perpetually, and he kept his wrath for ever: 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; Psalms 137:7.
Related Commentaries of Amos 1:11
Amos 1:11
11 Thus saith the LORD; For three transgressions of Edom, and for four, I will not turn away the punishment thereof; because he did pursue his brother with the sword, and did cast off all pity, and his anger did tear perpetually, and he kept his wrath for ever: