Now the sons of Reuven the firstborn of Yisrael, (for he was the firstborn; but forasmuch as he defiled his father's bed, his birthright was given unto the sons of Yosef the son of Yisrael: and the genealogy is not to be reckoned after the birthright.
These be the heads of their fathers' houses: The sons of Reuven the firstborn of Yisrael; Hanoch, and Pallu, Hezron, and Karmi: these be the families of Reuven.
And Leah conceived, and bare a son, and she called his name Reuven: for she said, Surely YY hath looked upon my affliction; now therefore my husband will love me.
And the children of Reuven, Yisrael's eldest son, by their generations, after their families, by the house of their fathers, according to the number of the names, by their polls, every male from twenty years old and upward, all that were able to go forth to war;
Take the sum of the people, from twenty years old and upward; as YY Commanded Moshe and the children of Yisrael, which went forth out of the land of Egypt.
And it came to pass, when Yisrael dwelt in that land, that Reuven went and lay with Bilhah his father's concubine: and Yisrael heard it. Now the sons of Yaakov were twelve: