Deuteronomy 2:30-33

30But Sihon king of Heshbon would not let us pass by him, because Adonai your God stiffened his spirit and hardened his heart, in order to hand him over to you this very day.

31“Adonai said to me, ‘See, I have begun to give Sihon and his land over to you—begin to take possession in order to take hold of his land.’

32“Then Sihon came out against us—he and all his people—to battle at Jahaz.

33Adonai our God gave him over to us, and we struck him down along with his sons and all his people.