Following are a number of back-translations as well as a sample translation for translators of Proverbs 21:7:

• Kupsabiny: “The wicked will be destroyed by their wickedness
  because they refuse to do the truth.” (Source: Kupsabiny Back Translation)
• Newari: “The wicked will destroy themselves by their violence.
  They refuse to do good.” (Source: Newari Back Translation)
• Hiligaynon: “The cruelty of the wicked is the one who can-destroy them, for they do not want to do right/just.” (Source: Hiligaynon Back Translation)
• Kankanaey: “Sinners will-be-punished because of their cruelty, because they refuse/don’t-want to do what is right.” (Source: Kankanaey Back Translation)
• English: “Wicked people refuse to do what is right/just,
  but they will be ruined because of the violent things that they do.” (Source: Translation for Translators)