1 Chronicles 5:1

The 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 , so that he could not be enrolled as the oldest son ;

The sons of Reuben the firstborn of Israel (he was the firstborn, but when he defiled his father`s marriage bed, his rights as firstborn were given to the sons of Joseph son of Israel; so he could not be listed in the genealogical record in accordance with his birthright,

Now the sons of Reuben the firstborn of Israel, (for he was the firstborn; but, forasmuch as he defiled his father's bed, his birthright was given unto the sons of Joseph the son of Israel : and the genealogy is not to be reckoned after the birthright.