2 Samuel 21:1-3

There was a famine in the days of David for three years, year after year. And David inquired of Yahweh, and Yahweh said, “The bloodguilt is on Saul and on his household, because he killed the Gibeonites.” So the king called the Gibeonites and spoke to them. Now the Gibeonites were not from the Israelites; they were from the remainder of the Amorites. Now the Israelites had sworn to them, but Saul tried to wipe them out in his zeal for the Israelites and Judah. So David asked the Gibeonites, “What can I do for you, and with what can I make amends that you may bless the inheritance of Yahweh?”