Following are a number of back-translations as well as a sample translation for translators of Jeremiah 9:7:

• Kupsabiny: “So the God of power is saying,
  ‘I shall come and make them go through the fire of pain/punishment
  so they can become clean.
  What else is there that I can do to my people
  for their great sin/disobedience?” (Source: Kupsabiny Back Translation)
• Hiligaynon: “Therefore I, the LORD Almighty, says that I will-refine my people like a metal, and I will-test them. What else can I do with them?” (Source: Hiligaynon Back Translation)
• English: “Therefore I, the Commander of the armies of angels, say this:
  Listen carefully to what I say: I will cause my people to experience great afflictions,
  like a metalworker puts metal in a hot fire to completely burn out the impure bits.
  Because of all the evil things that my people have done,
  there is absolutely nothing else that I can do.” (Source: Translation for Translators)