Matthew Henry
We have here another brave country delivered into the hand of Israel, that of Bashan; the conquest of Sihon is often mentioned together with that of Og, to the praise of God, the rather because in these Israel’s triumphs began, Ps 135:11, Ps 136:19, Ps 136:20. See,
came out against Israel to battle, Deut 3:1. It was wonderful that he did not take warning by the ruin of Sihon, and send to desire conditions of peace; but he trusted to his own strength, and so was hardened to his destruction. Note, Those that are not awakened by the judgments of God upon others, but persist in their defiance of heaven, are ripening apace for the like judgments upon themselves, Jer 3:8. God bade Moses not fear him, Deut 3:2. If Moses himself was so strong in faith as not to need the caution, yet it is probable that the people needed it, and for them these fresh assurances are designed; “
I will deliver him into thy hand; not only deliver thee out of his hand, that he shall not be thy ruin, but deliver him
into thy hand, that thou shalt be his ruin, and make him pay dearly for his attempt.” He adds,
Thou shalt do to him as thou didst to Sihon, intimating that they ought to be encouraged by their former victory to trust in God for another victory, for he is God, and changeth not.
the river Arnon unto Hermon, Deut 3:8. Their conquering and possessing these countries was intended, not only for the encouragement of Israel in the wars of Canaan, but for the satisfaction of Moses before his death. Since he must not live to see the completing of their victory and settlement, God thus gives him a specimen of it. Thus the Spirit is given to those that believe as the
earnest of their inheritance, until the redemption of the purchased possession.