Numbers 21:23-32 And Sihon would not suffer Israel to pass through his border: but Sihon gathered all his people together, and went out against Israel into the wilderness: and he came to Jahaz, and fought against Israel. Torrey's Topical Textbook
Deuteronomy 2:32-36 Then Sihon came out against us, he and all his people, to fight at Jahaz. Torrey's Topical Textbook