Amorites; this name being here taken largely or generally for any of the Canaanites, as is frequent; for, to speak strictly, the citizens of Hebron, here mentioned, Joshua 10:3, were Hittites; thus the Gibeonites, who were Hivites, Joshua 10:19, are called Amorites, 2 Samuel 21:2. It is reasonably supposed that the Amorites, being numerous and victorious beyond Jordan, did pour forth colonies or forces into the land of Canaan, and there subdued divers places, and so communicated their name to all the rest.
Related Commentaries of Joshua 10:5
Joshua 10:5
5 Therefore the five kings of the Amorites, the king of Jerusalem, the king of Hebron, the king of Jarmuth, the king of Lachish, the king of Eglon, gathered themselves together, and went up, they and all their hosts, and encamped before Gibeon, and made war against it.