So the king called the Gibeonites and spoke to them. Now the Gibeonites were not of the children of Israel, but were of the remnant of the Amorites, and the children of Israel had sworn an oath to them, but Saul had sought to strike them down in his zeal for the children of Israel and Judah.
“sworn an oath to them.” The oath and the circumstance of its being sworn between Israel and the people of Gideon is in Joshua 9:1-15.
“zeal.” This is a great example of misplaced zeal that is sin in the eyes of God. There is both godly and ungodly zeal.