Numbers 21

And Israel took all these cities: and Israel dwelt in all the cities of the Amorites, in Heshbon, and in all the villages thereof. Num 21:25

And they turned and went up by the way of Bashan: and Og the king of Bashan went out against them, he, and all his people, to the battle at Edrei. Num 21:33

And the Lord said unto Moses, Fear him not: for I have delivered him into thy hand, and all his people, and his land; and thou shalt do to him as thou didst unto Sihon king of the Amorites, which dwelt at Heshbon. Num 21:34

So they smote him, and his sons, and all his people, until there was none left him alive: and they possessed his land. Num 21:35

The Bronze Serpent: 21:1-9.  Harried by a minor Canaanite people, Israel destroys their cities.  But even victory does not satisfy.  The people complain against Moses, grumbling about the desert and the food God has supplied.  In judgment the Lord sends venomous snakes.  Finally the people exhibit repentance!  Moses makes a bronze snake and lifts it up on a pole in the center of the camp, look at the bronze serpent, and live.

Journey to Moab: 21:10-35. After a long southern detour to avoid Edom, Israel turns north again.  Moab has also been avoided by God’s command (Deut. 2:9). But now, to reach Canaan, Israel must cross the land of the Amorites. Request for free passage is made and refused. Israel destroys the Amorite army and occupies their cities. The neighboring land of Bashan is also overrun, giving Israel possession of Transjordan, the lands east of the Jordan river.

A policy of total destruction of the enemy is established by God.