Following are a number of back-translations as well as a sample translation for translators of Job 17:5:

• Kupsabiny: “A person who has decided to betray friends,
  calamity shall come to his children.” (Source: Kupsabiny Back Translation)
• Newari: “A person who defames his friends for a reward,
  the eyes of his sons will become dim.” (Source: Newari Back Translation)
• Hiligaynon: “They are like a man who betrays his friends in-order to gain-money, which is the reason of the suffering of their children.” (Source: Hiligaynon Back Translation)
• English: “Our ancestors often said, ‘It often happens that when someone betrays his friends in order to get some of their property,
  it is that person’s children who will be punished for it;’
  so I desire/hope that will be true of these friends of mine who are lying about me.” (Source: Translation for Translators)