the LORD . . . from the LORD. Hebrew. Jehovah. Repetition very emphatic. Compare "we", Gen_19:13.
brimstone and fire. Figure of speech Hendiadys (App-6) = burning brimstone. Referred to in Deu_29:23. Isa_13:19. Jer_49:18. Zep_2:9. Mat_10:15. 2Pe_2:6. Jud_1:7.