2 Samuel 21:1-3

Then there was a famine in the days of David three years, year after year; and David enquired of the LORD. And the LORD answered, {It is} for Saul, and for {his} bloody house, because he slew the Gibeonites. {enquired...: Heb. sought the face, etc} 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 to the children of Israel and Judah.) Wherefore David said unto the Gibeonites, What shall I do for you? and wherewith shall I make the atonement, that ye may bless the inheritance of the LORD?