2 Samuel 21:8-9

But the king took Armoni and Mephibosheth, the two sons of Saul to whom Rizpah, the daughter of Aiah, had given birth; and the five sons of Saul's daughter Merab, whose father was Adriel, the son of Barzillai the Meholathite: And he gave them up to the Gibeonites, and they put them to death, hanging them on the mountain before the Lord; all seven came to their end together in the first days of the grain-cutting, at the start of the cutting of the barley.