2 But the Lord told me, 'Do not be afraid of him, for I have given you victory over Og and his entire army, and I will give you all his land. Treat him just as you treated King Sihon of the Amorites, who ruled in Heshbon.'

Matthew Henry's Commentary on Deuteronomy 3:2

Commentary on Deuteronomy 3:1-11

(Read Deuteronomy 3:1-11)

1-11 Og was very powerful, but he did not take warning by the ruin of Sihon, and desire conditions of peace. He trusted his own strength, and so was hardened to his destruction. Those not awakened by the judgments of God on others, ripen for the like judgments on themselves.