Following are a number of back-translations as well as a sample translation for translators of Job 31:29:

• Kupsabiny: “I did not laugh at my enemies when they were in trouble
  nor were I happy when calamity came to them.” (Source: Kupsabiny Back Translation)
• Newari: “I have never rejoiced at the destruction of our enemy,
  nor have I ever rejoiced when he was suffering,” (Source: Newari Back Translation)
• Hiligaynon: “‘I have- not -rejoiced when my enemies were-destroyed or when difficulty/hardship came to them.” (Source: Hiligaynon Back Translation)