Following are a number of back-translations as well as a sample translation for translators of Jeremiah 48:40:

• Kupsabiny: “God is saying,
  ‘Another nation will gallop/swoop towards
  the land of Moab like an eagle and fight (it).” (Source: Kupsabiny Back Translation)
• Hiligaynon: “The LORD still continued to say, ‘Look! The enemy of Moab (is) like an eagle that flies to swoop this.” (Source: Hiligaynon Back Translation)
• English: “This is what I, Yahweh, say:
  ‘Look! Their enemies will be swooping/rushing down over Moab
  like an eagle swoops down to seize an animal.” (Source: Translation for Translators)