Revelation 18:19

19 and they did cast dust upon their heads, and were crying out, weeping and sorrowing, saying, Wo, wo, the great city! in which were made rich all having ships in the sea, out of her costliness -- for in one hour was she made waste.

Revelation 18:19 Meaning and Commentary

Revelation 18:19

And they cast dust on their heads
As the seafaring men on account of Tyre, ( Ezekiel 27:30 ) this was a gesture used in mourning when persons were in afflicted and distressed circumstances, denoting disorder, confusion, and debasement; see ( Joshua 7:6 ) ( Job 2:12 )

and cried, weeping and wailing, saying, alas, alas! that great city;
as in ( Revelation 18:10 Revelation 18:16 ) so it was once, though now in flames:

wherein were made rich all that had ships in the sea;
not only the merchants of the earth, as in ( Revelation 18:3 ) the cardinals, archbishops, and bishops, but the governors of religious houses; these accumulated great wealth to themselves, and got the best of lands into their possession for the use and support of their abbeys and monasteries:

by reason of her costliness;
or costly things; pardons, indulgences, absolution, saying Mass, and praying souls out of purgatory, all which are costly, and hereby these traders have been enriched; and now the remembrance of these things, of which they will be deprived, will affect and grieve them, as well as the suddenness of Rome's ruin:

for in one hour is she made desolate;
her judgment come, and her riches come to nought, ( Revelation 18:10 Revelation 18:17 ) .

Revelation 18:19 In-Context

17 `And every shipmaster, and all the company upon the ships, and sailors, and as many as work the sea, far off stood,
18 and were crying, seeing the smoke of her burning, saying, What [city is] like to the great city?
19 and they did cast dust upon their heads, and were crying out, weeping and sorrowing, saying, Wo, wo, the great city! in which were made rich all having ships in the sea, out of her costliness -- for in one hour was she made waste.
20 `Be glad over her, O heaven, and ye holy apostles and prophets, because God did judge your judgment of her!'
21 And one strong messenger did take up a stone as a great millstone, and did cast [it] to the sea, saying, `Thus with violence shall Babylon be cast, the great city, and may not be found any more at all;
Young's Literal Translation is in the public domain.