1 Samuel 17:55 WEB

⁵³  The children of Israel returned from chasing after the Philistines, and they plundered their camp.

⁵⁴  David took the head of the Philistine, and brought it to Jerusalem; but he put his armor in his tent.

⁵⁵  When Saul saw David go forth against the Philistine, he said to Abner, the captain of the host, Abner, whose son is this youth? Abner said, As your soul lives, O king, I can't tell.

⁵⁶  The king said, 'Inquire whose son the young man is!'

⁵⁷  As David returned from the slaughter of the Philistine, Abner took him, and brought him before Saul with the head of the Philistine in his hand.