And the Lord said to Moses: "Enter to Pharaoh. For I have hardened his heart, and that of his servants, so that I may accomplish these, my signs, in him,
And he caused a very strong wind to blow from the west, and, seizing the locusts, it cast them into the Red Sea. There remained not so much as one in all the parts of Egypt.
Now Moses and Aaron did all the wonders that are written, in the sight of Pharaoh. And the Lord hardened the heart of Pharaoh; neither did he release the sons of Israel from his land.
And the Lord said to him, as he was returning to Egypt: "See that you accomplish, in the sight of Pharaoh, all the wonders that I have placed in your hand. I will harden his heart, and he will not release the people.
And Sihon, the king of Heshbon, was not willing to grant passage to us. For the Lord your God had hardened his spirit, and had fastened his heart, so that he would be delivered into your hands, just as you now see.