Numbers 21:1-3

1When the Canaanite, the king of Arad, who lived in the Negeb, heard that Israel was coming by the way of Atharim, he fought against Israel, and took some of them captive.

2And Israel vowed a vow to the Lord and said, "If you will indeed give this people into my hand, then I will devote their cities to destruction."

3And the Lord heeded the voice of Israel and gave over the Canaanites, and they devoted them and their cities to destruction. So the name of the place was called Hormah.