Numbers 21:2

So Israel made a vow to the Lord: “If You will deliver this people into our hands, we will devote their cities to destruction.”

Note Forms of the Hebrew cherem refer to the giving over of things or persons to the Lord, either by destroying them or by giving them as an offering; also in verse 3.

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.

Israel vowed a vow to the Lord, and said, “If you will indeed deliver this people into my hand, then I will utterly destroy their cities.”

And Israel vowed a vow unto Jehovah, and said, If thou wilt indeed deliver this people into my hand, then I will utterly destroy their cities.