And the king said, inquire thou whose son the stripling [is]. ] Still the question is the same, being very desirous of knowing of what family he was, for the reason before given, (See Gill on 1 Samuel 17:55).
54
And David took the head of the Philistine, and brought it to Jerusalem; but he put his armor in his tent.
55
And when Saul saw David go forth against the Philistine, he said to Abner the captain of the host, Abner, whose son [is] this youth? And Abner said, [As] thy soul liveth, O king, I cannot tell.
56
And the king said, Inquire thou whose son the stripling [is].
57
And 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.
58
And Saul said to him, Whose son [art] thou, [thou] young man? And David answered, I [am] the son of thy servant Jesse the Beth-lehemite.