5 and all the firstborn in the land of Egypt shall die, from the firstborn of Pharaoh who sits on his throne, even to the firstborn of the maidservant that is behind the mill, as well as all the firstborn of beasts.
6 Then there shall be a great cry throughout all the land of Egypt, such as there has never been, nor shall ever be again.
7 But against any of the children of Israel a dog will not even move his tongue, against man or beast, in order that you may know how that the Lord distinguishes between Egypt and Israel.’
8 Then all these your servants shall come down to me and bow themselves to me, saying, ‘Get out, and all the people who follow you!’ After that I will go out.” And he went out from Pharaoh in great anger.
9 Then the Lord said to Moses, “Pharaoh shall not listen to you so that My wonders may be multiplied in the land of Egypt.”
10 So Moses and Aaron did all these wonders before Pharaoh, and the Lord hardened Pharaoh’s heart, and he would not let the children of Israel go out of his land.