8 Therefore in one day her plagues will come: death, mourning, and famine; and she will be utterly burned with fire; for the Lord God who has judged her is strong.
in one day – meaning “one thousand years,” see 2 Pet 3:8, etc.
her plagues will come – described in Rev 16:2-10.
and she will be burned up with fire – the 1,000 years, as “one day” takes us to the judgment day, as indicated by the expression “Lord God,” for God becomes our Lord again on that Day, Rev 11:15.