Following are a number of back-translations as well as a sample translation for translators of Job 28:21:

• Kupsabiny: “Everything that has life is not seeing (it)
  and also the birds.” (Source: Kupsabiny Back Translation)
• Newari: “It cannot be seen by the eyes of anyone living in the world.
  The birds that fly in the sky also do not see it.” (Source: Newari Back Translation)
• Hiligaynon: “There is none creature that can-see this even the birds.” (Source: Hiligaynon Back Translation)
• English: “‘When I spoke, people waited to hear what I would say
  and remained silent until I advised them what they should do.” (Source: Translation for Translators)