Exodus 7:3 And I will render Pharaoh's heart obdurate, and multiply my signs and my wonders in the land of Egypt. (DBY)
Deuteronomy 2:30 But Sihon the king of Heshbon would not let us pass by him; for Jehovah thy God hardened his spirit, and made his heart obdurate, that he might give him into thy hand, as it is this day. (DBY)