The victory over Sihon and his hosts was as great as that over Pharaoh and his hosts, and so was the victory over Og and his hosts. Each of these victories was as important as that over the thirty-one kings that Joshua later captured, and it would well have behooved Israel to sing songs of praise to their Lord as after Pharaoh's destruction. David later made good this omission, for he intoned a song of praise in gratitude for the victory God had lent to Israel over Sihon and Og.
Without direct assistance from God these victories would not have been possible, but He sent hornets upon them, and their destruction was irrevocable. Two hornets pursued ever Amorite; one bit one eye, the second the other eye, and the poison of these little creatures consumed those bitten by them. These hornets remained on the east side of the Jordan, and did not pursue Israel's march to the regions west of the Jordan, nevertheless they wrought great havoc among the Canaanites of the region west of the Jordan. The hornets stood on the eastern bank of the Jordan, and spat their venom across to the opposite bank, so that the Canaanites that were hit became blind and were disarmed.