2 Samuel 21:7

7 Now the king spared Mephibosheth son of Jonathan, the son of Saul, because of the oath before the LORD between David and Jonathan son of Saul.

2 Samuel 21:7 Meaning and Commentary

2 Samuel 21:7

But the king spared Mephibosheth, the son of Jonathan, the son
of Saul
As they did not name particular persons, only required seven sons, it was at the option of the king what sons to deliver to them, and therefore kept back Mephibosheth, who is thus described, to distinguish him from a son of Saul's of the same name, after mentioned:

because of the Lord's oath that [was] between them, between David and
Jonathan the son of Saul;
not merely or only out of affection to Mephibosheth, but because of the oath, that he might not be guilty of the same crime Saul was in slaying the Gibeonites.

2 Samuel 21:7 In-Context

5 And they answered the king, “As for the man who consumed us and plotted against us to exterminate us from existing within any border of Israel,

6 let seven of his male descendants be delivered to us so that we may hang them before the LORD at Gibeah of Saul, the chosen of the LORD.” “I will give them to you,” said the king.

7 Now the king spared Mephibosheth son of Jonathan, the son of Saul, because of the oath before the LORD between David and Jonathan son of Saul.

8 But the king took Armoni and Mephibosheth, the two sons whom Rizpah daughter of Aiah had borne to Saul, as well as the five sons whom Merab daughter of Saul had borne to Adriel son of Barzillai the Meholathite.

9 And he delivered them into the hands of the Gibeonites, and they hanged them on the hill before the LORD. So all seven of them fell together; they were put to death in the first days of the harvest, at the beginning of the barley harvest.