Following are a number of back-translations as well as a sample translation for translators of Amos 5:12:

• Kupsabiny: “I know how great your sins are
  and your disobedience.
  You cause suffering to gentle people.
  You take bribes and block the weak
  not to get justice in court.” (Source: Kupsabiny Back Translation)
• Newari: “Because I know that your transgressions are many
  and that your sins are very great.
  You give trouble to the righteous and take bribes from them.
  In the courts you pervert justice to the poor.” (Source: Newari Back Translation)
• Hiligaynon: “For I know how great-in-numbers and how serious (are) your (plur.) sins. You (plur.) oppress the people who (have) no sin and you (plur.) even take-money-(illegally) (from them). You (plur.) do- not -give justice to the poor-ones in the court.” (Source: Hiligaynon Back Translation)
• English: “I know all of your sins
  and the terrible crimes that you have committed.
  You oppress righteous/honest people,
  and you accept bribes.
  You do not allow judges to treat poor people justly.” (Source: Translation for Translators)