1 Samuel 17:56-60

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

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

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