“Whose son are you, young man?” asked Saul. “I am the son of your servant Jesse of Bethlehem,” David replied.
Here is 1. The engagement between the two champions, Sa1 17:48. To this engagement the Philistine advanced with a great deal of state and gravity; if he must encounter a pigmy, yet it shall be with the magnificence of a giant and a grandee.
Commenting on 1 Samuel 17:48-58
Whose son art thou, thou young man? - That Saul should not know David with whom he had treated a little before, and even armed him for the combat, and that he should not know who his father was, though he had sent to his father for permission to David to reside constantly with him, (Sa1 16:22), is exceedingly strange!
1Sa 17:57-58 When David returned “from the slaughter of the Philistine,” i.e., after the defeat of Goliath, and when Abner, who probably went as commander to meet the brave hero and congratulate him upon his victory, had brought him to Saul, the king addressed the same question to David, who immediately gave him the information he desired.
Commenting on 1 Samuel 17:57-58