Warning of the Final Plague
4 And Moses said, “Thus says the Lord: About midnight I will go forth in the midst of Egypt; 5 and all the first-born in the land of Egypt shall die, from the first-born of Pharaoh who sits upon his throne, even to the first-born of the maidservant who is behind the mill; and all the first-born of the cattle. 6 And there shall be a great cry throughout all the land of Egypt, such as there has never been, nor ever shall be again. 7 But against any of the people of Israel, either man or beast, not a dog shall growl; that you may know that the Lord makes a distinction between the Egyptians and Israel. 8 And all these your servants shall come down to me, and bow down to me, saying, ‘Get you out, and all the people who follow you.’ And after that I will go out.” And he went out from Pharaoh in hot anger. 9 Then the Lord said to Moses, “Pharaoh will not listen to you; that my wonders may be multiplied in the land of Egypt.”
10 Moses and Aaron did all these wonders before Pharaoh; and the Lord hardened Pharaoh’s heart, and he did not let the people of Israel go out of his land.