2 Samuel 21:1-7

There was a famine during David’s reign that lasted for three years, so David asked the LORD about it. And the LORD said, “The famine has come because Saul and his family are guilty of murdering the Gibeonites.” So the king summoned the Gibeonites. They were not part of Israel but were all that was left of the nation of the Amorites. The people of Israel had sworn not to kill them, but Saul, in his zeal for Israel and Judah, had tried to wipe them out. David asked them, “What can I do for you? How can I make amends so that you will bless the LORD’s people again?” “Well, money can’t settle this matter between us and the family of Saul,” the Gibeonites replied. “Neither can we demand the life of anyone in Israel.” “What can I do then?” David asked. “Just tell me and I will do it for you.” Then they replied, “It was Saul who planned to destroy us, to keep us from having any place at all in the territory of Israel. 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.