1 Samuel 17:55-58

55Saul had watched David when he went out to fight the strong Philistine soldier. Saul said to Abner, the leader of his army, ‘Tell me Abner, who is that young man? Who is his father?’ Abner replied, ‘My king, I cannot tell you a lie. I do not know who he is.’

56The king said, ‘You must find out the name of that man's father.’

57When David returned after he had killed Goliath, Abner took him to Saul. David was still holding Goliath's head in his hand.

58Saul asked him, ‘Young man, who is your father?’ David answered, ‘I am the son of your servant Jesse, who lives in Bethlehem.’