Jaazer - To he identified probably with the ruins Sir or es-Sir 10 miles north of Heshbon. The occupation of it by the Israelites virtually completed their conquest of the Amorite kingdom; and prepared the way for the pastoral settlements in it which they not long after established Numbers 32:35.

And Moses sent to spy out Jaazer,.... Or Jazer, as it is called in Isaiah 16:9, another city that belonged to the Amorites, and which they had taken from the Moabites; and which came into the hands of the latter again, after the captivity of the ten tribes, as appears from the above places; according to Jerom (s), it was fifteen miles distant from Heshbon:

and they took the villages thereof; not the spies, as Jarchi, but the Israelites under Moses; who upon the return of the spies, and the report they made, marched towards it, and took it, and all the towns and villages round about it; for it seems to have been a principal city:

and drove out the Amorites that were there; that dwelt there, and were in possession of it; otherwise they would not have attacked it, had it, and its villages, been in the hands of the Moabites.

(s) De locis Heb. fol. 92. G.

And Moses sent to spy out Jaazer, and they took the villages thereof, and drove out the Amorites that were there.

21:32 Jaazer - One of the cities of Moab formerly taken from them by Sihon, and now taken from him by the Israelites.

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.