At this, David summoned the Gibeonites and spoke to them. (Now the Gibeonites were not Israelites, but a remnant of the Amorites. The Israelites had taken an oath concerning them, but in his zeal for Israel and Judah, Saul had sought to kill them.)
Jewish Publication Society of America Version (JPS1917) - 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 for the children of Israel and Judah —