2 Samuel 21:1-6

And there was a famine in the days of David three years, year after year; and David sought the face of Jehovah. And Jehovah said, It is for Saul, and for his bloody house, because he put to death the Gibeonites. And the king called the Gibeonites, and said unto them (now the Gibeonites were not of the children of Israel, but of the remnant of the Amorites; and the children of Israel had sworn unto them: and Saul sought to slay them in his zeal for the children of Israel and Judah); and David said unto the Gibeonites, What shall I do for you? and wherewith shall I make atonement, that ye may bless the inheritance of Jehovah? And the Gibeonites said unto him, It is no matter of silver or gold between us and Saul, or his house; neither is it for us to put any man to death in Israel. And he said, What ye shall say, that will I do for you. And they said unto the king, The man that consumed us, and that devised against us, that we should be destroyed from remaining in any of the borders of Israel, let seven men of his sons be delivered unto us, and we will hang them up unto Jehovah in Gibeah of Saul, the chosen of Jehovah. And the king said, I will give them.