Following are a number of back-translations as well as a sample translation for translators of Jeremiah 3:18:

• Kupsabiny: “The people of Israel and Judah shall join together and get up from the land of the North to return to the land that I gave in inheritance to their forefathers.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “In those days, the people of Juda and of Israel will-join in returning from captivity in the north going to the land that I gave to their ancestors as an inheritance.” (Source: Hiligaynon Back Translation)
• English: “At that time you people of Israel and the people of Judah will return from being exiled/forced to live in lands to the northeast.
  You will return to the land that I gave to your ancestors to belong to them forever.” (Source: Translation for Translators)