Psalm 135:8
He destroyed the first-born of Egypt, both of man and animal.
Psalm 78:51
He destroyed every firstborn in Egypt, the ones born in the tents of Ham when their fathers were young.
Exodus 12:12
Jehovah said: That night I will go through the land of Egypt. I will strike down all the firstborn in the land of Egypt, both man and beast. I will execute judgments against all the gods of Egypt! I am Jehovah!
Psalm 105:36
He killed all the firstborn sons, the first ones born in the land when their fathers were young.
Exodus 12:29-30
At midnight Jehovah killed every firstborn male in Egypt from the firstborn son of Pharaoh who ruled the land to the firstborn son of the prisoner in jail, and also every firstborn animal.
Exodus 13:15
Pharaoh was too stubborn to let us go. Because of this every firstborn male in Egypt-human and animal was killed. This is why we sacrifice every firstborn male to Jehovah and buy every firstborn son back from Jehovah.
Psalm 136:10
To him who destroyed the Egyptians in their firstborn. His loving kindness is everlasting.