2 Samuel 21:6-9

6let seven men of his sons be delivered unto us, and we will hang them up unto the LORD in Gibeah of Saul, the chosen of the LORD; And the king said, I will give them.

7But the king spared Mephibosheth, the son of Jonathan the son of Saul, because of the LORD’S oath that was between them, between David and Jonathan the son of Saul.

8But the king took the two sons of Rizpah the daughter of Aiah, whom she bare unto Saul, Armoni and Mephibosheth; and the five sons of Michal the daughter of Saul, whom she bare to Adriel the son of Barzillai the Meholathite:

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