The word "how" here shows that something that people thought was impossible has happened. This can be stated in active form. AT: "We never thought that enemies could capture Babylon, but they have captured her ... We never thought that Babylon could become a ruined place, but it has become a ruined place" (See: [[rc://en/ta/man/translate/figs-activepassive]])
The word "praise" is a metonym for the thing that people praised, and the word "earth" is a metonym for the people living on the earth. This can be translated in active form. AT: "enemies have seized Babylon, the nation that everyone on earth praised" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-activepassive]])
Babylon's enemies have overcome her. "Waves" represent many people groups overcoming Babylon. The words "sea" and "water" often represent the nations. (See: [[rc://en/ta/man/translate/figs-metaphor]])