Genesis 25:31 References
a Deuteronomy 21:16, Deuteronomy 21:17, 1 Chronicles 5:1, 1 Chronicles 5:2
Deuteronomy 21
16
then it shall be in the day he wills what he has to his sons, he cannot make the son of the loved the firstborn before the son of the unloved, who is the firstborn.
Deuteronomy 21
17
"But he shall acknowledge the firstborn, the son of the unloved, by giving him a double portion of all that he has, for he is the abeginning of his strength; bto him belongs the right of the firstborn.
1 Chronicles 5
1
Now the sons of Reuben the firstborn of Israel (for ahe was the firstborn, but because bhe defiled his father's bed, chis birthright was given to the sons of Joseph the son of Israel; so that he is not enrolled in the genealogy according to the birthright.