My Notes
Authors
Jamieson, Fausset, and Brown - Commentary Critical and Explanatory on the Whole Bible
31. Jacob said, Sell me … thy birthright—that is, the rights and privileges of the first-born, which were very important, the chief being that they were the family priests (Exodus 4:22 ) and had a double portion of the inheritance (Deuteronomy 21:17 ).