And the Lord said to Moses, When you go back to Egypt, see that you do before Pharaoh all the wonders which I have given you power to do: but I will make his heart hard and he will not let the people go.
Then Pharaoh sent for Moses and Aaron and said, Make prayer to the Lord that he will take away these frogs from me and my people; and I will let the people go and make their offering to the Lord.
And Pharaoh sent and got word that there was no loss of any of the cattle of Israel. But the heart of Pharaoh was hard and he did not let the people go.
O Lord, why do you send us wandering from your ways, making our hearts hard, so that we have no fear of you? Come back, because of your servants, the tribes of your heritage.
Why do you make your hearts hard, like the hearts of Pharaoh and the Egyptians? When he had made sport of them, did they not let the people go, and they went away?