And Pharaoh’s heart was made heavy, and he did not send away the sons of Israel, as Jehovah had said by the hand of Moses.
And I know that the king of Egypt will not permit you to go, not even by a strong hand.
And Jehovah said to Moses, As you go to return to Egypt, see all the wonders which I have put in your hand, and do them before Pharaoh. And I will make strong his heart, and he will not send the people away.
And the heart of Pharaoh was hardened, and he did not listen to them, as Jehovah had said.
And Pharaoh saw that the rain and the hail and the thunder had ceased, and he continued to sin. And he made his heart strong, he and his servants.