Numbers 21:21-23
And Israel sent messengers to Sihon king of the Amorites, saying,
Torrey's Topical Textbook—AKJV

Deuteronomy 2:30
But Sihon king of Heshbon would not let us pass by him: for the LORD your God hardened his spirit, and made his heart obstinate, that he might deliver him into your hand, as appears this day.
Torrey's Topical Textbook—AKJV