פירוש על יהושע 24:11

The people of Yericho went to war against you. As did the Emorites, the Perezites etc.⁵Why were these nations involved in the battle of Yericho? All these seven nations are mentioned here because Yericho is on the border, and was the bolt and lock of Eretz Yisroel. Therefore, all these seven nations were gathered there, represented by their elite soldiers.