1 Chronicles 5:1

AND the sons of Reuben the first-born of Israel—for he was the first-born, but when he went up to his father’s bed, his father gave his birthright to his son Joseph as the son of Israel: yet in the genealogy he did not attain the right of primogeniture;

And the sons of Ruben the first-born of Israel (for he was the first-born; but because of his going up to his father's couch, his father gave his blessing to his son Joseph, even the son of Israel; and he was not reckoned as first-born;