Now at the time that Saul saw David going out against the Philistines, he said to Abner the captain of the army: Of what family is this young man descended, Abner? And Abner said: As thy soul liveth, O king, I know not.
And when David was returned, after the Philistine was slain, Abner took him, and brought him in before Saul, with the head of the Philistine in his hand.
And Saul said to David: Thou art not able to withstand this Philistine, nor to fight against him: for thou art but a boy, but he is a warrior from his youth.