2 And the Lord said to me, Have no fear of him: for I have given him and all his people and his land into your hands; do to him as you did to Sihon, king of the Amorites, who was ruling 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.