Following are a number of back-translations as well as a sample translation for translators of Hosea 12:3:

• Kupsabiny: “He gripped the heal of his brother
  when he was still in the stomach.
  And when he had become a big person/adult,
  he wrestled with God.” (Source: Kupsabiny Back Translation)
• Newari: “In his mother’s womb, Jacob fought with his brother.
  When he grew up, he fought with God.” (Source: Newari Back Translation)
• Hiligaynon: “When their ancestor Jacob (was) still in the womb of his mother, he already wanted to be above his twin. And when he-was-grown-up, he fought against God” (Source: Hiligaynon Back Translation)
• English: “When Jacob was in his mother’s womb, he grabbed his brother Esau’s heel because he wanted to be born first.
  When Jacob grew up, he wrestled with God.” (Source: Translation for Translators)