Following are a number of back-translations as well as a sample translation for translators of Jeremiah 31:3:

• Kupsabiny: “I came to them long ago and said: I love you always, and I have shown you that love with one stomach.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “In the time-past, the LORD appeared to the Israelinhon and said, ‘I really love you with an everlasting love. In my kindness, I had you came-near to me.” (Source: Hiligaynon Back Translation)
• English: “Long ago I, Yahweh, said to your ancestors, the Israeli people,
  ‘I have loved you and I will continue to love you forever.
  By faithfully loving you, I have brought you close to myself.’” (Source: Translation for Translators)