Num. 21:1 The capture of Arad-Hormah
When 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. Then Israel made a vow to the Lord and said, "If you will indeed give this people into our hands, then we will utterly destroy their towns." The Lord listened to the voice of Israel, and handed over the Canaanites; and they utterly destroyed them and their towns; so the place was called Hormah.
Num. 33:40 The king of Arad
The Canaanite, the king of Arad, who lived in the Negeb in the land of Canaan, heard of the coming of the Israelites.
Judg. 1:16-17 The settlement of the Kenites amidst Israel
The descendants of Hobab the Kenite, Moses' father-in-law, went up with the people of Judah from the city of palms into the wilderness of Judah, which lies in the Negeb near Arad. Then they went and settled with the Amalekites. Judah went with his brother Simeon, and they defeated the Canaanites who inhabited Zephath, and devoted it to destruction. So the city was called Hormah.