Following are a number of back-translations as well as a sample translation for translators of Jeremiah 51:2:

• Kupsabiny: “I will send to Babylon the people of another country
  to throng/swarm from/at all sides.
  I am going to destroy Babylon completely,
  when that day of destruction arrives.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “I will-send- the ones from-other-places -to Babilonia to attack and destroy her, like a chaff that was blown-away by the wind. They will-attack Babilonia in all direction at that time of destruction.” (Source: Hiligaynon Back Translation)
• English: “I will send a foreign army to come to get rid of Babylonia
  like a strong wind that blows away chaff.
  They will attack from every direction
  on that day of disaster.” (Source: Translation for Translators)