Exodus 4:23

and I have said to thee, Let my son go, that he may serve me, and thou have refused to let him go. Behold, I will slay thy son, thy first-born.

Exodus 11:5

and all the first-born in the land of Egypt shall die, from the first-born of Pharaoh who sits upon his throne, even to the first-born of the maid-servant that is behind the mill, and all the first-born of cattle.

Exodus 12:29

And it came to pass at midnight, that LORD smote all the first-born in the land of Egypt, from the first-born of Pharaoh who sat on his throne to the first-born of the captive who was in the dungeon, and all the first-born of cattl

Psalm 105:36

He also smote all the firstborn in their land, the chief of all their strength.

Psalm 135:8

who 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 LORD, the God of Israel, Let my people go, that they may hold a feast to me in the wilderness.

Exodus 7:16

And thou shall say to him, LORD, the God of the Hebrews, has sent me to thee, saying, Let my people go, that they may serve me in the wilderness. And, behold, until now thou have not hearkened.

Psalm 78:51

and smote all the first-born in Egypt, the chief of their strength in the tents of Ham.

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