59 Here καί (kai) has been translated as “then” to indicate the implied sequence within the narrative.
60 On ὅρμημα (hormēma) states, “violent rush, onset ὁρμήματι βληθήσεται Βαβυλών Babylon will be thrown down with violence Rv 18:21.” L&N 68.82 refers to the suddenness of the force or violence.
61 Thrown down is a play on both the words and the action. The angel’s action with the stone illustrates the kind of sudden violent force with which the city will be overthrown.

In other versions

Then a mighty angel took up a stone like a great millstone and threw it into the sea, saying,

“So will Babylon the great city be thrown down with violence,

and will be found no more;

Then a mighty angel picked up a boulder the size of a large millstone and threw it into the sea, and said:

“With such violence

the great city of Babylon will be thrown down,

never to be found again.

Then a mighty angel picked up a stone like a large millstone and threw it into the sea, saying,

In this way, Babylon the great city

will be thrown down violently

and never be found again.

Then a mighty angel picked up a boulder the size of a huge millstone. He threw it into the ocean and shouted,

“Just like this, the great city Babylon

will be thrown down with violence

and will never be found again.

And one powerful angel picked up a stone like a great millstone and threw it into the sea, saying,

“In this way Babylon the great city will be thrown down with violence,

and will never be found again!

And a mighty angel took up a stone like a great millstone, and cast it into the sea, saying,

Thus with violence shall that great city Babylon be thrown down, and shall be found no more at all.

Public Domain