Deuteronomy 3-4
Og king of Bashan with his whole army marched out to meet us in battle at Edrei. The Lord said to me, “Do not be afraid of him, for I have delivered him into your hands, along with his whole army and his land. Do to him what you did to Sihon king of the Amorites, who reigned in Heshbon.”
We completely destroyed them, as we had done with Sihon king of Heshbon, destroying every city—men, women and children. But all the livestock and the plunder from their cities we carried off for ourselves.
We took all the towns on the plateau, and all Gilead, and all Bashan as far as Salekah and Edrei, towns of Og’s kingdom in Bashan.
Of the land that we took over at that time, I gave the Reubenites and the Gadites the territory north of Aroer by the Arnon Gorge, including half the hill country of Gilead, together with its towns. The rest of Gilead and also all of Bashan, the kingdom of Og, I gave to the half-tribe of Manasseh.
However, your wives, your children and your livestock (I know you have much livestock) may stay in the towns I have given you, until the Lord gives rest to your fellow Israelites as he has to you, and they too have taken over the land that the Lord your God is giving them across the Jordan. After that, each of you may go back to the possession I have given you.
At that time I commanded Joshua: “You have seen with your own eyes all that the Lord your God has done to these two kings. The Lord will do the same to all the kingdoms over there where you are going. Do not be afraid of them; the Lord your God himself will fight for you.”
But because of you the Lord was angry with me and would not listen to me. “That is enough,” the Lord said. “Do not speak to me anymore about this matter. Go up to the top of Pisgah and look west and north and south and east. Look at the land with your own eyes, since you are not going to cross this Jordan. But commission Joshua, and encourage and strengthen him, for he will lead this people across and will cause them to inherit the land that you will see.” So we stayed in the valley near Beth Peor.
You were shown these things so that you might know that the Lord is God; besides him there is no other.
Why?
Be afraid of the Lord, for our God is the real God; besides him, there is no other.
How?
Be aware of the consequences of the Israelites' history recorded in the Bible. Our God is everlasting God, fear the Lord and remember God's mercy, the Lord's word, honor the Holy name of the Lord