The sons of Reuben the firstborn of Israel. (He was the firstborn, but because he defiled his father's bed his birthright was given to the sons of Joseph son of Israel, so that he is not enrolled in the genealogy according to the birthright;
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.
(New Revised Standard Bible Version Online)