Following are a number of back-translations as well as a sample translation for translators of Jeremiah 6:6:

• Kupsabiny: “The God of power said,
  ‘Cut down trees
  and heap up mud to surround Jerusalem.
  This city deserves to be punished
  because the oppression is not small.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “This is what the LORD Almighty is-saying: ‘You (plur.) cut-down tress that are-used-to-demolish the stone-walled of Jerusalem, and you (plur.) gather soil beside the stone-walled so-that you (plur.) can-climb it. This city should now be punished, for oppression in this place has- now -spread-out.” (Source: Hiligaynon Back Translation)
• English: “Yahweh, the Commander of the armies of angels in heaven, says this:
  ‘I will command those soldiers to cut down the trees outside Jerusalem
  and to build dirt ramps up to the top of the city walls
  in order that they can enter the city.
  This city must be punished
  because everyone there continually oppresses others.” (Source: Translation for Translators)