Following are a number of back-translations as well as a sample translation for translators of Jeremiah 51:14:

• Kupsabiny: “God of power has sworn by his name, ‘Truly, I shall send to you many people like a swarm of locusts to fight you and they shall shout because they have been victorious.’” (Source: Kupsabiny Back Translation)
• Hiligaynon: “The LORD Almighty has sworn by himself saying, ‘I will- surely have- you (plur.) -attack by many enemies as many as locusts, and they will-shout (for) victory against you.’” (Source: Hiligaynon Back Translation)
• English: “The Commander of the armies of angels has solemnly promised, using his own name,
  ‘Your cities will be filled with your enemies;
  I will cause them to be like a swarm of locusts;
  and they will shout triumphantly when they conquer your city.’” (Source: Translation for Translators)