Exodus 11:4-8 And Moses said, Thus said the LORD, About midnight will I go out into the middle of Egypt:

AKJV⁽ⁱ⁾ ⁴ And Moses said, Thus said the LORD, About midnight will I go out into the middle of Egypt: ⁵ And all the firstborn in the land of Egypt shall die, from the first born of Pharaoh that sits on his throne, even to the firstborn of the maidservant that is behind the mill; and all the firstborn of beasts. ⁶ And there shall be a great cry throughout all the land of Egypt, such as there was none like it, nor shall be like it any more. ⁷ But against any of the children of Israel shall not a dog move his tongue, against man or beast: that you may know how that the LORD does put a difference between the Egyptians and Israel. ⁸ And all these your servants shall come down to me, and bow down themselves to me, saying, Get you out, and all the people that follow you: and after that I will go out. And he went out from Pharaoh in a great anger.