Exodus 11:3-5

Amplified Bible, Classic Edition

³ And the Lord gave the people favor in the sight of the Egyptians. Moreover, the man Moses was exceedingly great in the land of Egypt, in the sight of Pharaoh’s servants and of the people.

⁴ And Moses said, Thus says the Lord, About midnight I will go out into the midst of Egypt;

⁵ And all the firstborn in the land [the pride, hope, and joy] of Egypt shall die, from the firstborn of Pharaoh, who sits on his throne, even to the firstborn of the maidservant who is behind the hand mill, and all the firstborn of beasts.