2 Samuel 21:8-11

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

9and he gave them into the hands of the Gibeonites. So they hanged them on the hill before Adonai, so that all seven fell together. They were put to death during the days of harvest, at the beginning of barley harvest.

10Then Rizpah daughter of Aiah took sackcloth and spread it on the rock for herself, from the beginning of harvest until the rain poured on them from the sky. She did not let the birds of the sky rest on them by day nor the beasts of the field by night.

11David was told what Rizpah daughter of Aiah, the concubine of Saul, had done.