Psalm 78:51
He struck all the firstborn of Egypt, the virility in the tents of Ham.

Psalm 105:36
Then He struck all the firstborn in their land, the firstfruits of all their vigor.

Psalm 135:8
He struck down the firstborn of Egypt, of both man and beast.

Exodus 11:5, 6
and every firstborn son in the land of Egypt will die, from the firstborn of Pharaoh who sits on his throne, to the firstborn of the servant girl behind the hand mill, as well as the firstborn of all the cattle. . . .

Exodus 12:12, 29
On that night I will pass through the land of Egypt and strike down every firstborn male, both man and beast, and I will execute judgment against all the gods of Egypt. I am the LORD. . . .

Hebrews 11:28
By faith he kept the Passover and the sprinkling of blood, so that the destroyer of the firstborn would not touch Israel's own firstborn.