Genesis 49:3

⁵¹and struck all the firstborn in Egypt, the chief of their strength in the tents of Ham.

¹⁷but he shall acknowledge the firstborn, the son of the hated, by giving him a double portion of all that he has; for he is the beginning of his strength. The right of the firstborn is his.

³⁶He struck also all the firstborn in their land, the first fruits of all their manhood.

³²Leah conceived, and bore a son, and she named him Reuben. For she said, “Because the LORD has looked at my affliction; for now my husband will love me.”

¹⁸Joseph said to his father, “Not so, my father, for this is the firstborn. Put your right hand on his head.”

¹The sons of Reuben the firstborn of Israel (for he was the firstborn, but because he defiled his father’s couch, his birthright was given to the sons of Joseph the son of Israel; and the genealogy is not to be listed according to the birthright.

²⁰The children of Reuben, Israel’s firstborn, their generations, by their families, by their fathers’ houses, according to the number of the names, one by one, every male from twenty years old and upward, all who were able to go out to war:

¹These are the sons of Israel: Reuben, Simeon, Levi, Judah, Issachar, Zebulun,

³the sons of Reuben the firstborn of Israel: Hanoch, Pallu, Hezron, and Carmi.

⁸These are the names of the children of Israel, who came into Egypt, Jacob and his sons: Reuben, Jacob’s firstborn.