Following are a number of back-translations as well as a sample translation for translators of Job 20:21:

• Kupsabiny: “When they are fed/given food, they eat the food until they lick the plates!
  So, their wealth does not stay for long.” (Source: Kupsabiny Back Translation)
• Newari: “Nothing could escape his greed,
  so his good days will not remain for long [lit.: many days].” (Source: Newari Back Translation)
• Hiligaynon: “But nothing is left for him that he can eat, for his wealth will-vanish.” (Source: Hiligaynon Back Translation)
• English: “When they finished eating their food, there was never anything left over because they had greedily eaten it all;
  but now their prosperity will end.” (Source: Translation for Translators)