Verse 2. - And Israel vowed a vow. On these vows, and on things "devoted" or "banned" (חֵרֶם - ἀνάθεμα), see on Leviticus 27:28, and on the moral character of such wholesale slaughters see on chapter 31. If it was right to destroy the Canaanites at all, no fault can be found with the vow; it merely did for that military proceeding what national feeling and discipline does for the far more bloody exigencies of modern warfare, removing it from the sphere of private hatred, revenge, and cupidity, and placing it upon a higher level. The patriot soldier of these days feels himself to be a mere instrument in the hands of the rulers of his people to maintain their rights or avenge their wrongs. The Israelite could not have this feeling, which was foreign to his time and place in history, but he could feel that he was a mere instrument in the hands of God to perform his will upon his enemies. In either case a must important advantage is secured; the soldier does not slay in order to gratify his own hatred, or in order to satisfy his own cupidity. It is quite true that such vows as are here mentioned would certainly in a more advanced stage of civilization be abused to throw a cloak of religion over frightful enormities; but it does not in the least follow that they were not permitted and even encouraged by God in an age to which they were natural, and under circumstances in which they were beneficial.

21:1-3 Before the people began their march round the country of Edom, the king of Arad, a Canaanite, who inhabited the southern part of the country, attacked them in the wilderness, and took some prisoners. This was to lead the Israelites to look more thoroughly to the Lord.And Israel vowed a vow unto the Lord,.... The Israelites made supplication to the Lord for help against their enemies, and that he would give them victory over them, and made promises to him:

and said, if thou wilt indeed deliver this people into my hand; certainly and entirely deliver them, so as that a complete victory shall be obtained over them:

then will I utterly destroy their cities; or "anathematize", or devote them to utter destruction (o); slay man and beast, burn their houses and take their goods, not for a spoil, for their own private use, but reserve them for the service of God; all which is implied in the vow made, as was done to Jericho, Joshua 6:21 and so it is a vow, as Abendana observes, of what they would do when they came to the land of Canaan.

(o) "et anathematisabo", Montanus; "devovebo", Tigurine version.