1 Samuel 17:55-58

55Now when Saul had seen David going out against the Philistine, he said to Abner the commander of the army, “Abner, whose son is 1this young man?” And Abner said, “By your life, O king, I do not know.”

56And the king said, “You then, ask whose son the youth is.”

57So when David returned from killing the Philistine, Abner took him and 2brought him before Saul with the Philistine’s head in his hand.

58Then Saul said to him, “Whose son are you, young man?” And David answered, “3I am the son of your servant Jesse the Bethlehemite.”