Numbers 21:1 in the World English Bible
The Canaanite, the king of Arad, who lived in the South, heard that Israel came by the way of Atharim. He fought against Israel, and took some of them captive.
Context
1 And when king Arad the Canaanite, which dwelt in the south, heard tell that Israel came by the way of the spies; then he fought against Israel, and took some of them prisoners.
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.