2 Samuel 21:2
"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.)"
Cross References (ranked by relevance)
But Jehu took no heed to walk in the law of the LORD God of Israel with all his heart: for he departed not from the sins of Jeroboam, which made Israel to sin.
And Saul answered, God do so and more also: for thou shalt surely die, Jonathan.
And thou shalt consume all the people which the LORD thy God shall deliver thee; thine eye shall have no pity upon them: neither shalt thou serve their gods; for that will be a snare unto thee.
But in the fourth generation they shall come hither again: for the iniquity of the Amorites is not yet full.
And he said, Come with me, and see my zeal for the LORD. So they made him ride in his chariot.
For I bear them record that they have a zeal of God, but not according to knowledge.
They zealously affect you, but not well; yea, they would exclude you, that ye might affect them.
They shall put you out of the synagogues: yea, the time cometh, that whosoever killeth you will think that he doeth God service.