Following are a number of back-translations as well as a sample translation for translators of Isaiah 3:8:

• Kupsabiny: “Jerusalem will be torn apart,
  and the land of Judah will be destroyed,
  because (they) refuse God through their words/deeds.
  and do not fear his greatness/glory.” (Source: Kupsabiny Back Translation)
• Newari: “Certainly Jerusalem will be scattered,
  and Judah will be lost.
  The matters that they keep on talking about and the work that they keep on doing are against the LORD.
  They despise the glory of the LORD.” (Source: Newari Back Translation)
• Hiligaynon: “Surely Jerusalem and Juda will-be-destroyed, because what they do and say are against the LORD. They rebel against the powerful presence of the LORD.” (Source: Hiligaynon Back Translation)