4 after he had struck Sihon the king of the Amorites, who lived in Heshbon, and Og the king of Bashan, who lived in Ashtaroth, at Edrei.

Matthew Henry's Commentary on Deuteronomy 1:4

Commentary on Deuteronomy 1:1-8

(Read Deuteronomy 1:1-8)

Moses spake to the people all the Lord had given him in commandment. Horeb was but eleven days distant from Kadesh-barnea. This was to remind them that their own bad conduct had occasioned their tedious wanderings; that they might the more readily understand the advantages of obedience. They must now go forward. Though God brings his people into trouble and affliction, he knows when they have been tried long enough. When God commands us to go forward in our Christian course, he sets the heavenly Canaan before us for our encouragement.