Following are a number of back-translations as well as a sample translation for translators of Isaiah 13:7:

• Kupsabiny: “So, the hand/arm of every person shall become limp
  and all people shall lose hope.” (Source: Kupsabiny Back Translation)
• Newari: “So all hands will grow weak,
  The hearts of all people will quake, [they] will be very much afraid.” (Source: Newari Back Translation)
• Hiligaynon: “At that time, all hands will-be-weakened. All people will-lose courage.” (Source: Hiligaynon Back Translation)
• English: “All of your people will be very afraid ,
  with the result that they will be unable even to lift their arms.” (Source: Translation for Translators)