Exodus 4:23

So I said to you, ‘Let My son go that he may serve Me’; but you have refused to let him go. Behold, I will kill your son, your firstborn.”’”

Exodus 11:5

and all the firstborn in the land of Egypt shall die, from the firstborn of the Pharaoh who sits on his throne, even to the firstborn of the slave girl who is behind the millstones; all the firstborn of the cattle as well.

Exodus 12:29

Now it came about at midnight that the Lord 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 cattle.

Psalm 105:36

He also struck down all the firstborn in their land,
The first fruits of all their vigor.

Psalm 135:8

He smote the firstborn of Egypt,
Both of man and beast.

Exodus 5:1

And afterward Moses and Aaron came and said to Pharaoh, “Thus says the Lord, the God of Israel, ‘Let My people go that they may celebrate a feast to Me in the wilderness.’”

Exodus 7:16

You shall say to him, ‘The Lord, the God of the Hebrews, sent me to you, saying, “Let My people go, that they may serve Me in the wilderness. But behold, you have not listened until now.”

Psalm 78:51

And smote all the firstborn in Egypt,
The first issue of their virility in the tents of Ham.

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