Genesis 49:3
Reuben, you are my first-born, my might, and the beginning of my strength, the excellency of dignity and the excellency of power.
Deuteronomy 21:17
But he shall acknowledge the son of the hated as the first-born by giving him a double portion of all that he has. For he is the beginning of his strength. The right of the first-born is his.
Genesis 29:32
And Leah conceived and bore a son. And she called his name Reuben, for she said, Surely Jehovah has looked upon my afflictions. Now therefore my husband will love me.
Psalm 78:51
and struck all the first-born in Egypt, the first of the strong in the tents of Ham;
Psalm 105:36
He also struck all the first-born in their land, the chief of all their strength.
Genesis 46:8
And these were the names of the sons of Israel who came into Egypt, Jacob and his sons: Reuben, Jacob's first-born.
Genesis 48:18
And Joseph said to his father, Not so, my father. For this is the first-born. Put your right hand on his head.
Numbers 1:20
And the sons of Reuben, Israel's first-born son, by their generations, according to their families, by their fathers' house, according to the number of the names, by their heads, every male from twenty years old and upward, all that were able to go forth to war:
Numbers 26:5
Reuben, the first-born of Israel, the sons of Reuben, of Hanoch who came of the family of the Hanochites; of Pallu the family of the Palluites;
1 Chronicles 2:1
These are the sons of Israel: Reuben, Simeon, Levi, and Judah, Issachar, and Zebulun,
1 Chronicles 5:1
And the sons of Reuben, the first-born of Israel (for he was the first-born; but since he defiled his father's bed, his birthright was given to the sons of Joseph the son of Israel, and the genealogy is not to be counted according to the birthright;
1 Chronicles 5:3
the sons of Reuben the first-born of Israel: Hanoch, and Pallu, Hezron, and Carmi.