Following are a number of back-translations as well as a sample translation for translators of Jeremiah 50:18:

• Kupsabiny: “So, I the God of power of Israel am saying:
  I shall punish this king of Babylon and his country,
  like when I punished the king of Assyria and his country.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “‘Therefore I, the LORD Almighty, the God of Israel, says, ‘I will-punish the king of Babilonia, just as I punished the king of Asiria.” (Source: Hiligaynon Back Translation)
• English: “So this is what I, the Commander of the armies of angels, the God whom the Israeli people worship, say:
  ‘Now I will punish the King of Babylon and the people of his land,
  like I punished the King of Assyria.” (Source: Translation for Translators)