Following are a number of back-translations as well as a sample translation for translators of Job 9:29:

• Kupsabiny: “And if I am really in the wrong,
  why should I waste my efforts for nothing?” (Source: Kupsabiny Back Translation)
• Newari: “If you have already declared me as guilty
  why should I do work hard in vain?” (Source: Newari Back Translation)
• Hiligaynon: “Since he considers me now as having-sinned, what is the worth of my trying-hard to defend myself?” (Source: Hiligaynon Back Translation)
• English: “He will condemn me/declare that I should be punished,
  so why should I keep trying in vain to defend myself?” (Source: Translation for Translators)