Exodus 12:29
The Tenth Plague: Death of the Firstborn
29 pAt midnight the Lord struck down all the firstborn in the land of Egypt, qfrom the firstborn of Pharaoh who sat on his throne to the firstborn of the captive who was in the dungeon, and all the firstborn of the livestock.
Psalm 78:51
51 hHe struck down every firstborn in Egypt,
ithe firstfruits of their strength in the tents of Ham.
Psalm 105:36
36 dHe struck down all the firstborn in their land,
ethe firstfruits of all their strength.
Psalm 135:8
8 hHe it was who struck down the firstborn of Egypt,
both of man and of beast;
Psalm 136:10
10 to him who cstruck down the firstborn of Egypt,
for his steadfast love endures forever;