1 Chronicles 5:1

English Standard Version

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; (Ge 29:32; Ge 35:22; Ge 48:15; Ge 49:3; Ge 49:4) 

New International Version

1 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, 

New International Reader’s Version

1 Reuben was the eldest son of Israel. But he slept with his father’s concubine. By doing that, he made his father’s bed ‘unclean’. That’s why his rights as the eldest son were given to the sons of Joseph, the son of Israel. So Reuben isn’t listed in the family history as the one who had the rights of the eldest son. 

King James Version

1 Now the sons of Reuben the firstborn of Israel, (for he was the firstborn; but, forasmuch as he defiled his father' 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. 

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