Revelation 18:21

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;

Revelation 18:21 Meaning and Commentary

Revelation 18:21

And a mighty angel
Not Christ, nor one of the ministering spirits, but some man or set of men, perhaps the same with him in ( Revelation 18:1 )

took up a stone like a great millstone, and cast it into the sea;
just as Jeremiah took a stone and bound it to his book after he had read it, and cast it into the river Euphrates, as a sign and token of the destruction of old Babylon, ( Jeremiah 51:63 Jeremiah 51:64 ) ( Exodus 15:5 ) ( Nehemiah 9:11 )

saying, thus with violence shall that great city be thrown down, and
shall be found no more at all;
which is expressive of the utter destruction of Rome, and of the violence, force, and power with which it will be destroyed, and of the suddenness and swiftness of its destruction, and of the irrecoverableness of its state and condition.

Revelation 18:21 In-Context

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;
22 and voice of harpers, and musicians, and pipers, and trumpeters, may not be heard at all in thee any more; and any artizan of any art may not be found at all in thee any more; and noise of a millstone may not be heard at all in thee any more;
23 and light of a lamp may not shine at all in thee any more; and voice of bridegroom and of bride may not be heard at all in thee any more; because thy merchants were the great ones of the earth, because in thy sorcery were all the nations led astray,
Young's Literal Translation is in the public domain.