Psalm 105:36
He struck also all the firstborn in their land, the first fruits of all their manhood.
Genesis 49:3
"Reuben, you are my firstborn, my might, and the beginning of my strength; excelling in dignity, and excelling in power.
Psalm 78:51
and struck all the firstborn in Egypt, the chief of their strength in the tents of Ham.
Psalm 135:8
Who struck the firstborn of Egypt, both of man and animal;
Psalm 136:10
To him who struck down the Egyptian firstborn; for his loving kindness endures forever;
Exodus 4:23
and I have said to you, "Let my son go, that he may serve me;" and you have refused to let him go. Behold, I will kill your son, your firstborn.'"
Exodus 11:4-5
Moses said, "This is what Yahweh says: 'About midnight I will go out into the midst of Egypt,
Exodus 12:12
For I will go through the land of Egypt in that night, and will strike all the firstborn in the land of Egypt, both man and animal. Against all the gods of Egypt I will execute judgments: I am Yahweh.
Exodus 12:29-30
It happened at midnight, that Yahweh struck all the firstborn in the land of Egypt, from 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 livestock.
Hebrews 11:28
By faith, he kept the Passover, and the sprinkling of the blood, that the destroyer of the firstborn should not touch them.