Psalm 105:36
He smote all the firstborn in their land, even the chief of all their strength.
Genesis 49:3
"Reuben, thou art mine eldest son, my might and the beginning of my strength, chief in receiving and chief in power.
Psalm 78:51
When he smote all the firstborn in Egypt, the most principal and mightiest in the dwellings of Ham.
Psalm 135:8
He smote the firstborn of Egypt, both of man and of beast.
Psalm 136:10
Which smote Egypt with their firstborn! For his mercy endureth forever.
Exodus 4:23
and therefore sayeth unto thee: let my son go, that he may serve me. If thou wilt not let him go: behold, I will slay thine eldest son.'"
Exodus 11:4-5
And Moses said, "Thus sayeth the LORD, 'About midnight will I go out among the Egyptians,
Exodus 12:12
"For I will go about in the land of Egypt this same night, and will smite all the firstborn in the land of Egypt, both of man and beast, and upon all the gods of Egypt will I the LORD do execution.
Exodus 12:29-30
And at midnight the LORD smote all the firstborn in the land of Egypt: from the firstborn of Pharaoh that sat on his seat, unto the firstborn of the captive that was in prison, and all firstborn of the cattle.
Hebrews 11:28
Through faith he ordained the Easter lamb, and the effusion of blood, lest he that destroyed the first born should touch them.