Following are a number of back-translations as well as a sample translation for translators of Isaiah 58:9:

• Kupsabiny: “That is when I God shall hear you
  and answer you.
  And when you beg me to save you,
  I shall say, ‘I am here.’
  Abandon the matters of oppressing others.
  Throw away sin and those words/matters of accusing others falsely.” (Source: Kupsabiny Back Translation)
• Newari: “Then you will call, [and] the LORD will give answer.
  You will ask for help and he will say,
  ‘I am here.’
  "Whatever there is, throw away the yoke of oppression from your midst,
  stop pointing your finger at others and saying bad things [about them].” (Source: Newari Back Translation)
• Hiligaynon: “When you (plur.) call me asking for help, I will-answer you (plur.).
  ‘If you (plur.) will- now -stop oppressing, accusing what is not true, and speaking evil,” (Source: Hiligaynon Back Translation)
• English: “Then you will call out to me,
  and I will quickly answer and say that I will help you.’
  Stop oppressing people/treating people cruelly;
  stop falsely accusing people;
  and stop saying evil things about people.” (Source: Translation for Translators)