11. some of you--some parts of your territory.
      as God overthrew Sodom-- (De 29:23; Isa 13:19; Jer 49:18; 50:40; 2Pe 2:6; Jude 7). "God" is often repeated in Hebrew instead of "I." The earthquake here apparently alluded to is not that in the reign of Uzziah, which occurred "two years" later (Am 1:1). Traces of earthquakes and volcanic agency abound in Palestine. The allusion here is to some of the effects of these in previous times. Compare the prophecy, De 28:15-68, with Am 4:6-11 here.
      as a firebrand plucked out of . . . burning--(Compare Isa 7:4; Zec 3:2). The phrase is proverbial for a narrow escape from utter extinction. Though Israel revived as a nation under Jeroboam II, it was but for a time, and that after an almost utter destruction previously (2Ki 14:26).

JFB.