Numbers 21:2-3

LXX2012(i) 2 And Israel vowed a vow to the Lord, and said, If you will deliver this people into my power, I will devote it and its cities [to you]. 3 And the Lord listened to the voice of Israel, and delivered the Chananite into his power; and [Israel] devoted him and his cities, and they called the name of that place Anathema.