5 for her sins have reached to the sky, and God has remembered her iniquities. 6 Return to her just as she returned, and repay her double as she did, and according to her works. In the cup which she mixed, mix to her double. 7 However much she glorified herself, and grew wanton, so much give her of torment and mourning. For she says in her heart, ‘I sit a queen, and am no widow, and will in no way see mourning.’ 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.

9 The kings of the earth, who committed sexual immorality and lived wantonly with her, will weep and wail over her, when they look at the smoke of her burning,

Matthew Henry's Commentary on Revelation 18:5-9

Commentary on Revelation 18:1-8

(Read Revelation 18:1-8)

The downfal and destruction of the mystical Babylon are determined in the counsels of God. Another angel comes from heaven. This seems to be Christ himself, coming to destroy his enemies, and to shed abroad the light of his gospel through all nations. The wickedness of this Babylon was very great; she had forsaken the true God, and set up idols, and had drawn all sorts of men into spiritual adultery, and by her wealth and luxury kept them in her interest. The spiritual merchandise, by which multitudes have wickedly lived in wealth, by the sins and follies of mankind, seems principally intended. Fair warning is given to all that expect mercy from God, that they should not only come out of this Babylon, but assist in her destruction. God may have a people even in Babylon. But God's people shall be called out of Babylon, and called effectually, while those that partake with wicked men in their sins, must receive of their plagues.

Commentary on Revelation 18:9-19

(Read Revelation 18:9-19)

The mourners had shared Babylon's sensual pleasures, and gained by her wealth and trade. The kings of the earth, whom she flattered into idolatry, allowing them to be tyrannical over their subjects, while obedient to her; and the merchants, those who trafficked for her indulgences, pardons, and honours; these mourn. Babylon's friends partook her sinful pleasures and profits, but are not willing to share her plagues. The spirit of antichrist is a worldly spirit, and that sorrow is a mere worldly sorrow; they do not lament for the anger of God, but for the loss of outward comforts. The magnificence and riches of the ungodly will avail them nothing, but will render the vengeance harder to be borne. The spiritual merchandise is here alluded to, when not only slaves, but the souls of men, are mentioned as articles of commerce, to the destroying the souls of millions. Nor has this been peculiar to the Roman antichrist, and only her guilt. But let prosperous traders learn, with all their gains, to get the unsearchable riches of Christ; otherwise; even in this life, they may have to mourn that riches make to themselves wings and fly away, and that all the fruits their souls lusted after, are departed from them. Death, at any rate, will soon end their commerce, and all the riches of the ungodly will be exchanged, not only for the coffin and the worm, but for the fire that cannot be quenched.