Bamidbar 21:1-2

Orthodox Jewish Bible

21 And when melech of Arad the Kena’ani, which dwelt in the Negev, heard that Yisroel came by the Derech HaAtarim; then he fought against Yisroel, and took some of them prisoners.

² And Yisroel vowed a neder unto Hashem, and said, If Thou wilt indeed deliver this people into my hand, then I will utterly destroy their cities.