Divrey Hayamim Alef 5:1-3

Orthodox Jewish Bible

5 Now the Bnei Reuven the bechor Yisroel, for he was the bechor; but forasmuch as he defiled the bed of aviv, his bechorah (firstborn birthright) was given unto the Bnei Yosef Ben Yisroel, though [the latter was] not listed in the family registers as the bechorah.

² For Yehudah prevailed above his brethren, and of him came the nagid; but the bechorah (portion of the firstborn) was Yosef’s.

³ The Bnei Reuven bechor Yisroel were Chanoch, and Pallu, Chetzron, and Carmi.