Numbers 21:2
And Israel vowed a vow unto the LORD, and said, If thou wilt indeed deliver this people into my hand, then I will utterly destroy their cities.
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} ytmrxhw "et anathematisabo", Montanus; "devovebo", Tigurine version.