Moses did not originate the rights of primogeniture , but recognized them, since he found them pre-existing in the general social system of the Eas…

Deuteronomy 21:15–17. THE BIRTHRIGHT.

One beloved, and another hated —that is, one preferr…

But he shall acknowledge the son of the hated for the
firstborn
Own him and declare h…

This law restrains men from disinheriting their eldest sons without just cause. The principle in this case regarding children is still binding on p…