Cross reference
Exodus 4:23
23 and I have said unto thee, Let my son go, that he may serve me; and thou hast refused to let him go: behold, I will slay thy son, thy first-born.
Exodus 11:5
5 and all the first-born in the land of Egypt shall die, from the first-born of Pharaoh that sitteth upon his throne, even unto the first-born of the maid-servant that is behind the mill; and all the first-born of cattle.
Exodus 12:29
29 And it came to pass at midnight, that Jehovah smote all the first-born in the land of Egypt, from the first-born of Pharaoh that sat on his throne unto the first-born of the captive that was in the dungeon; and all the first-born of cattle.
Psalms 105:36
36 He smote also all the first-born in their land, The chief of all their strength.
Psalms 135:8
8 Who smote the first-born of Egypt, Both of man and beast;
Exodus 5:1
1 And afterward Moses and Aaron came, and said unto Pharaoh, Thus saith Jehovah, the God of Israel, Let my people go, that they may hold a feast unto me in the wilderness.
Exodus 7:16
16 And thou shalt say unto him, Jehovah, the God of the Hebrews, hath sent me unto thee, saying, Let my people go, that they may serve me in the wilderness: and, behold, hitherto thou hast not hearkened.
Psalms 78:51
51 And smote all the first-born in Egypt, The chief of their strength in the tents of Ham.