17 For in an hour such great riches are made desolate.’ Every shipmaster, and everyone who sails anywhere, and mariners, and as many as gain their living by sea, stood far away, 18 and cried out as they looked at the smoke of her burning, saying, ‘What is like the great city?’ 19 They cast dust on their heads, and cried, weeping and mourning, saying, ‘Woe, woe, the great city, in which all who had their ships in the sea were made rich by reason of her great wealth!’ For in one hour is she made desolate. 20 “Rejoice over her, O heaven, you saints, apostles, and prophets; for God has judged your judgment on her.” 21 A mighty angel took up a stone like a great millstone and cast it into the sea, saying, “Thus with violence will Babylon, the great city, be thrown down, and will be found no more at all. 22 The voice of harpists, minstrels, flute players, and trumpeters will be heard no more at all in you. No craftsman, of whatever craft, will be found any more at all in you. The sound of a mill will be heard no more at all in you.

Matthew Henry's Commentary on Revelation 18:17-22

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.

Commentary on Revelation 18:20-24

(Read Revelation 18:20-24)

That which is matter of rejoicing to the servants of God on earth, is matter of rejoicing to the angels in heaven. The apostles, who are honoured and daily worshipped at Rome in an idolatrous manner, will rejoice in her fall. The fall of Babylon was an act of God's justice. And because it was a final ruin, this enemy should never molest them any more; of this they were assured by a sign. Let us take warning from the things which brought others to destruction, and let us set our affections on things above, when we consider the changeable nature of earthly things.