And the LORD said unto Moses, When you go to return into Egypt, see that you do all those wonders before Pharaoh, whom I have put in your hand: but I will harden his heart, that he shall not let the people go.
And the LORD did according to the word of Moses; and he removed the swarms of flies from Pharaoh, from his servants, and from his people; there remained not one.
Then Pharaoh called for Moses and Aaron, and said, Entreat the LORD, that he may take away the frogs from me, and from my people; and I will let the people go, that they may do sacrifice unto the LORD.
And Pharaoh sent, and, behold, there was not one of the cattle of the Israelites dead. And the heart of Pharaoh was hardened, and he did not let the people go.
O LORD, why have you made us to err from your ways, and hardened our heart from your fear? Return for your servants' sake, the tribes of your inheritance.
But according to your hardness and unrepentant heart treasure up unto yourself wrath against the day of wrath and revelation of the righteous judgment of God;
Why then do you harden your hearts, as the Egyptians and Pharaoh hardened their hearts? when he had worked wonderfully among them, did they not let the people go, and they departed?