Following are a number of back-translations as well as a sample translation for translators of Isaiah 1:31:

• Kupsabiny: “Strong people will become a torch
  and their evil deeds will start a fire.
  Those people and their matters shall burn
  and there is no person who reduces the fire.” (Source: Kupsabiny Back Translation)
• Newari: “The very strongest men,
  will become weak like thread,
  Whatever they do will be like spark.
  Both will be burned completely.
  no one to quench the fire” (Source: Newari Back Translation)
• Hiligaynon: “Those among you (plur.) who are mighty will-become like dry tree/wood that easily burns, and their wicked deeds will-become like a flash/spark that will-burn them, and no one can-quench/[lit. stop] that fire.” (Source: Hiligaynon Back Translation)