Following are a number of back-translations as well as a sample translation for translators of Job 20:8:

• Kupsabiny: “They will be forgotten like a dream,
  which will never again be seen/appear.” (Source: Kupsabiny Back Translation)
• Newari: “Like a dream, he will be completely lost. It will never be possible to find him.
  Like a vision in the night, he will cease to exist.” (Source: Newari Back Translation)
• Hiligaynon: “He will-disappear like a dream or a vision in the night-time, and he will- never -be-seen anymore.” (Source: Hiligaynon Back Translation)
• English: “They will be forgotten like a dream is,
  and they will exist no more.
  They will vanish, like visions that people see during the night.” (Source: Translation for Translators)