2 Samuel 21:6-8

So let seven of Saul’s sons be handed over to us, and we will execute them before the LORD at Gibeon, on the mountain of the LORD.” “All right,” the king said, “I will do it.” The king spared Jonathan’s son Mephibosheth, who was Saul’s grandson, because of the oath David and Jonathan had sworn before the LORD. But he gave them Saul’s two sons Armoni and Mephibosheth, whose mother was Rizpah daughter of Aiah. He also gave them the five sons of Saul’s daughter Merab, the wife of Adriel son of Barzillai from Meholah.