Numbers 21:1-3 When King of Arad of the Canaanites heard Israel was coming, he fought Israel and took some captive. Israel vowed to the Lord that if He helped them, they would destroy all the cities. The Lord heard and delivered the people under King of Arad.
Numbers 21:4-9 The Israelites left Mount Hor and went around Edom. The people became impatient and grumbled to Moses that there were no water and food and were sick of eating Manna. The Lord was angry and sent snakes to bite and kill the people. The Israelites confessed their sin and asked Moses to pray to the Lord to take the snakes away. The Lord responded by telling Moses to make a snake of bronze and set it on a pole, so any who were bitten, when seeing it, would live.
Notes: In a spiritual application, anyone that was bitten by sin, if they looked at Jesus upon the cross, would will live eternally. John 3:14-15: Jesus said, “Just as Moses lifted up the snake in the wilderness, so the Son of Man must be lifted up, that everyone who believes may have eternal life in him.”
Numbers 21:10-20 The children of Israel camped at Oboth, and then at Iye-abarim, in the wilderness that is opposite Moab. They then camped at the Valley of Zered. From there, they camped on the other side of Arnon in the wilderness of the Amorites. This place was between the Moabites and the Amorites. They then went to Beer where the well of which the Lord gathered the people and gave them water through Moses. They then went to Mattanah, then Nahaliel, then Bamoth, and then to the valley in Moab by the top of Pisgah that looks down on the desert.
Numbers 21:21-30 Israel requested permission from King Sihon of the Amorites to pass through his land, but the king said no. Instead, Sihon sent his army to Jahaz and fought against Israel and lost. Israel took possession of the land and settled in the cities.
Numbers 21:31-35 Moses sent out men to spy out Jazer and took it over. The Israelites then confronted the army of King Og of Bashan at Edrei. The Lord told Moses to not fear, for he would give the Israelites victory. The Israelites defeated King Og, his sons, and all his people, until no survivor was left. And they possessed the land.