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
David took the head of the Pelishti, and brought it to Yerushalayim; but he put his armor in his tent.
55
When Sha'ul saw David go forth against the Pelishti, he said to Aviner, the captain of the host, Aviner, whose son is this youth? Aviner 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 Pelishti, Aviner took him, and brought him before Sha'ul with the head of the Pelishti in his hand.
58
Sha'ul said to him, Whose son are you, you young man? David answered, I am the son of your servant Yishai the Beit-Hallachmite.