Following are a number of back-translations as well as a sample translation for translators of Job 20:26:

• Kupsabiny: “All the things they have amassed shall get lost.
  An amazing/surprising fire shall burn/scorch (them)
  and destroy all their things.” (Source: Kupsabiny Back Translation)
• Newari: “Very great darkness is waiting for his riches.
  A fire not set by men will reduce him to ashes.
  And anything that remains in his tent will also be reduced to ashes.” (Source: Newari Back Translation)
• Hiligaynon: “His wealth will-disappear in the deepest-darkness. He will-be-burned and everything that were left in his dwelling-place by fire which is not a man that caused-to-light.” (Source: Hiligaynon Back Translation)
• English: “Their valuable possessions will all be destroyed;
  a fire that is not lit by humans, but by God, will burn them up
  and also destroy the things that are left in their tents.” (Source: Translation for Translators)