1 Samuel 17:53-55

King James Version

⁵³ And the children of Israel returned from chasing after the Philistines, and they spoiled their tents.

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

⁵⁵ And when Saul saw David go forth against the Philistine, he said unto Abner, the captain of the host, Abner, whose son is this youth? And Abner said, As thy soul liveth, O king, I cannot tell.