2 Samuel 21:6-10

let seven men from his sons be given to us, and we will hang them before the Lord in Gibeah of Saul, the chosen of the Lord.” And the king said, “I will give them.”

But the king spared Mephibosheth, the son of Jonathan, the son of Saul, because of the oath of the Lord which was between them, between David and Saul’s son Jonathan.

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

Then he handed them over to the Gibeonites, and they hanged them on the mountain before the Lord, so that the seven of them fell together; and they were put to death in the first days of harvest at the beginning of barley harvest.

And Rizpah the daughter of Aiah took sackcloth and spread it out for herself on the rock, from the beginning of harvest until it rained on them from the sky; and she allowed neither the birds of the sky to rest on them by day nor the wild animals by night.