Birthright See also Covenant; Firstborn A right of inheritance belonging to the firstborn son. In a broad sense, the birthright includes any or all rights or inheritance transmitted to a person when he is born into a family and culture. Sell me this day thy birthright, Gen. 25:29–34 (Gen. 27:36). The firstborn sat according to his birthright, Gen. 43:33. He set Ephraim before Manasseh, Gen. 48:14–20 (Jer. 31:9). The birthright was Joseph’s, 1 Chr. 5:2. Esau sold his birthright, Heb. 12:16. Ye are lawful heirs, D&C 86:9. Zion has a right to the priesthood by lineage, D&C 113:8 (Abr. 2:9–11).