(By the way of Mount Seir it takes eleven days to reach Kadesh-barnea from Horeb.)
In the fortieth year, on the first day of the eleventh month, Moses spoke to the Israelites just as the Lord had commanded him to speak to them.
This was after he had defeated King Sihon of the Amorites, who reigned in Heshbon, and King Og of Bashan, who reigned in Ashtaroth and in Edrei.
References for Deuteronomy 1:4
Beyond the Jordan in the land of Moab, Moses undertook to expound this law as follows:
The Lord our God spoke to us at Horeb, saying, "You have stayed long enough at this mountain.
Resume your journey, and go into the hill country of the Amorites as well as into the neighboring regions—the Arabah, the hill country, the Shephelah, the Negeb, and the seacoast—the land of the Canaanites and the Lebanon, as far as the great river, the river Euphrates.
See, I have set the land before you; go in and take possession of the land that I swore to your ancestors, to Abraham, to Isaac, and to Jacob, to give to them and to their descendants after them."
References for Deuteronomy 1:8
At that time I said to you, "I am unable by myself to bear you.
The Lord your God has multiplied you, so that today you are as numerous as the stars of heaven.
May the Lord, the God of your ancestors, increase you a thousand times more and bless you, as he has promised you!
But how can I bear the heavy burden of your disputes all by myself?