1 Samuel 17:55

When Saul had seen David going out to confront the Philistine, he asked Abner the commander of the army, “Whose son is this youth, Abner?”

“My king, as surely as you live, I don’t know,” Abner replied.

1 Samuel 16:21-22

When David came to Saul and entered his service, Saul admired him greatly, and David became his armor-bearer.

1 Samuel 17:58

Saul said to him, “Whose son are you, young man?”

“The son of your servant Jesse of Bethlehem,” David answered.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Whose son

1 Samuel 17:58
Saul said to him, “Whose son are you, young man?”

“The son of your servant Jesse of Bethlehem,” David answered.
1 Samuel 16:21
When David came to Saul and entered his service, Saul admired him greatly, and David became his armor-bearer.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.