the LORD... from the LORD. Hebrew. Jehovah. Repetition very emphatic. Compare "we", Genesis 19:13.
brimstone and fire. Figure of speech Hendiadys (App-6). burning brimstone. Referred to in Deuteronomy 29:23.Isaiah 13:19; Jeremiah 49:18; Zephaniah 2:9; Matthew 10:15; 2 Peter 2:6; Jude 1:7.