Following are a number of back-translations as well as a sample translation for translators of Jeremiah 8:17:

• Kupsabiny: “Then God said,
  ‘I shall send poisonous snakes to you
  that no one is able to relieve/soothe.
  Those snakes shall bite you.’” (Source: Kupsabiny Back Translation)
• Hiligaynon: “The LORD said, ‘Listen! I will-send these enemies to you (plur.) as-if-like venomous snakes that no one can-tame, and they will-bite you (plur.).’” (Source: Hiligaynon Back Translation)
• English: “Yahweh says, ‘I will send those enemy soldiers to Judah,
  and they will be like poisonous snakes among you.
  No one will be able to stop them from attacking you ;
  they will attack you like snakes do, and kill you.’” (Source: Translation for Translators)