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—AKJV

Deuteronomy 2:32-36
Then Sihon came out against us, he and all his people, to fight at Jahaz.
Torrey's Topical Textbook—AKJV