Following are a number of back-translations as well as a sample translation for translators of Isaiah 33:1:

• Kupsabiny: “You are in a bad position, you person
  who destroy people without you having been destroyed!
  How bad it is with you
  you betrayer who has not been betrayed.
  You shall also be destroyed
  when you have finished destroying others
  and you shall also be betrayed,
  when you have finished betraying others.” (Source: Kupsabiny Back Translation)
• Newari: “Woe to you who destroy,
  who have not yet fallen into destruction!
  Woe to you who betray,
  who have not yet been betrayed by anyone!
  The time at which you stop destroying,
  will be the time at which you also will be completely destroyed.
  The time at which you stop betraying will be the time
  at which you also will be betrayed.” (Source: Newari Back Translation)
• Hiligaynon: “You (plur.) are-to-be-pitied who are destroyers who have- not yet -experienced being-destroyed. Woe to you (plur.) who are traitors, who have- not yet -experienced being-deceive. When you (plur.) have-finished destroying and betraying, you (plur.) will- also now -be-destroyed and betrayed.” (Source: Hiligaynon Back Translation)