Exodus 11:5

11:5 and all the firstborn in the land of Egypt will die, from the firstborn son of Pharaoh who sits on his throne, to the firstborn son of the slave girl who is at her hand mill, and all the firstborn of the cattle.

Exodus 21:22

21:22 “If men fight and hit a pregnant woman and her child is born prematurely, but there is no serious injury, he will surely be punished in accordance with what the woman’s husband demands of him, and he will pay what the court decides.