Following are a number of back-translations as well as a sample translation for translators of 1 Samuel 17:55:

• Kupsabiny: “When Saul saw David going to fight with Goliath, he asked Abner who was commanding the soldiers of Israel that, ‘Whose son is he?’ Abner replied that, ‘Sir, for sure, I don’t know.’” (Source: Kupsabiny Back Translation)
• Newari: “When David had gone to fight with Goliath, Saul asked his commanding general Abner, "Abner, whose son is that young boy?’
  Abner said, "O king, May you live forever, I don’t know."” (Source: Newari Back Translation)
• Hiligaynon: “At-that time when Saul had-seen David approaching/going-near Goliat to-fight, he asked Abner the commander of the soldiers, ‘Abner, whose child/(son) (is) that young-man?’ Abner answered, ‘I do-not know at-all, Highly-esteemed King.’” (Source: Hiligaynon Back Translation)
• English: “As Saul watched David going toward Goliath, he said to Abner, the commanded of his army, ‘Abner, whose son is that young man?’ Abner replied, ‘As sure as you are alive/Truly , I do not know.’” (Source: Translation for Translators)