21 Then Jehovah said to Moses: “After you have returned to Egypt, see that you perform before Pharʹaoh all the miracles that I have empowered you to do.+ But I will allow his heart to become obstinate,+ and he will not send the people away.+

31 So Jehovah did according to Moses’ word, and the gadflies departed from Pharʹaoh, his servants, and his people. Not one was left. 32 However, Pharʹaoh again hardened his heart and did not send the people away.