Following are a number of back-translations as well as a sample translation for translators of Jeremiah 51:36:

• Kupsabiny: “So/Therefore, God is saying,
  I will fight for you (plur.) the battle you have,
  I will fight for what was done to you.
  I will make the water in Babylon dry up
  the rivers/valleys shall dry up.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “Therefore the LORD said, ‘People of Jerusalem, I truly will-defend you, and I will- surely -take-vengeance for you. I will-dry-up the sea and the springs of Babilonia.” (Source: Hiligaynon Back Translation)
• English: “And this is what Yahweh replies to the people of Jerusalem:
  ‘I will be like your lawyer to defend you,
  and I will avenge you.
  I will dry up the river in Babylon
  and all the springs of water.” (Source: Translation for Translators)