27 That is why the folk singers sing, Come to Heshbon to rebuild the city, restore Sihon's town. 28 Fire once poured out of Heshbon, flames from the city of Sihon; Burning up Ar of Moab, the natives of Arnon's heights. 29 Doom, Moab! The people of Chemosh, done for! Sons turned out as fugitives, daughters abandoned as captives to the king of the Amorites, to Sihon. 30 Oh, but we finished them off: Nothing left of Heshbon as far as Dibon; Devastation as far off as Nophah, scorched earth all the way to Medeba.
Matthew Henry's Commentary on Numbers 21:27-30
Commentary on Numbers 21:21-35
(Read Numbers 21:21-35)
Sihon went with his forces against Israel, out of his own borders, without provocation, and so ran upon his own ruin. The enemies of God's church often perish by the counsels they think most wisely taken. Og, king of Bashan, instead of being warned by the fate of his neighbours, to make peace with Israel, makes war with them, which proves in like manner his destruction. Wicked men do their utmost to secure themselves and their possessions against the judgments of God; but all in vain, when the day comes on which they must fall. God gave Israel success, while Moses was with them, that he might see the beginning of the glorious work, though he must not live to see it finished. This was, in comparison, but as the day of small things, yet it was an earnest of great things. We must prepare for fresh conflicts and enemies. We must make no peace or truce with the powers of darkness, nor even treat with them; nor should we expect any pause in our contest. But, trusting in God, and obeying his commands, we shall be more than conquerors over every enemy.