 Interpreting the words of "and Sihon would not suffer Israel to pass through his border; but Sihon gathered all his people together," the Midrash taught that God brought this about designedly so as to deliver Sihon into the Israelites' hands without trouble.The Midrash interpreted the words of "Sihon king of the Amorites, who dwelt at Heshbon," to say that if Heshbon had been full of mosquitoes, no person could have conquered it, and if Sihon had been living in a plain, no person could have prevailed over him.The Midrash taught that Sihon thus would have been invincible, as he was powerful and dwelt in a fortified city.