Numbers 21:1-3

1And the Canaanite king of Arad, who dwelt in the south, heard that Israel came by the way of Atharim, and he fought against Israel, and took some of them prisoners.

2Then Israel vowed a vow to Jehovah, and said, If thou give this people wholly into my hand, then I will utterly destroy their cities.

3And Jehovah listened to the voice of Israel, and delivered up the Canaanites; and they utterly destroyed them, and their cities. And they called the name of the place Hormah.