Psalm 135:8
It was the LORD who struck down the firstborn of Egypt, including both men and animals.
Psalm 78:51
He struck every firstborn in Egypt, the first fruits of their manhood in the tents of Ham.
Exodus 12:12
I'll pass through the land of Egypt that night and strike every firstborn in the land of Egypt, both people and animals. I'll execute judgments on all the gods of Egypt. I am the LORD.
Psalm 105:36
He struck down every firstborn in their land, the first fruits of all their progeny.
Exodus 12:29-30
And so at midnight the LORD struck down every firstborn in the land of Egypt, from the firstborn of Pharaoh who sat on his throne to the firstborn of the prisoner who was in the dungeon, and all the firstborn of the livestock.
Exodus 13:15
And when Pharaoh stubbornly refused to let us go, the LORD killed every firstborn in the land of Egypt, from the firstborn of humans to the firstborn of animals. Therefore, I sacrifice to the LORD every male that first opens the womb, but I redeem every firstborn of my sons.
Psalm 136:10
to the one who struck the firstborn of Egypt, for his gracious love is everlasting