2 And Jehovah said to me, Fear him not; for into thy hand have I given him, and all his people, and his land; and thou shalt do unto him as thou didst unto Sihon the king of the Amorites, who dwelt at 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.