Following are a number of back-translations as well as a sample translation for translators of Jeremiah 5:21:

• Kupsabiny: “‘Listen please, you people who are stupid and confused
  you have eyes and do not see
  and you have ears and do not hear.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “You (plur.) listen to this, you (plur.) who are foolish and senseless people. You (plur.) have eyes but you (plur.) can- not -see, have ears but can- not -hear.” (Source: Hiligaynon Back Translation)
• English: “Listen to this, you people who are foolish and who do not have any sense:
  You have eyes, but it is as though you cannot see;
  you have ears, but it is as though you cannot hear.” (Source: Translation for Translators)