2 Samuel 21:2-3

Then the king sent for the Gibeonites; (now the Gibeonites were not of the children of Israel, but were the last of the Amorites, to whom the children of Israel had given an oath; but Saul, in his passion for the children of Israel and Judah, had made an attempt on their lives:) So David said to the Gibeonites, What may I do for you? how am I to make up to you for your wrongs, so that you may give a blessing to the heritage of the Lord?