Exodus 11:4-5 ▼

4 And Moses says, “Thus said YHWH: About midnight I am going out into the midst of Egypt,

5 and every firstborn in the land of Egypt has died, from the firstborn of Pharaoh who is sitting on his throne, to the firstborn of the maidservant who [is] behind the millstones, and all the firstborn of beasts;