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 26:5-7
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;
Numbers 2:10-11
On the south side shall be the standard of the camp of Reuben, according to their armies; the ruler of the sons of Reuben shall be Elizur the son of Shedeur.
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.
Genesis 46:9
And the sons of Reuben: Hanoch, and Phallu, and Hezron, and Carmi.
Genesis 49:3-4
Reuben, you are my first-born, my might, and the beginning of my strength, the excellency of dignity and the excellency of power.
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;