We don’t consider birthrights, today, as being of any great value as they did in Biblical times. In Biblical times, a birthright had a lot of advantages and responsibilities, such as:
1. The first born son would become the head of the family or in charge. What he said goes.
2. The first born son would have full charge over the family and its property.
3. The first born son would be responsible for the welfare of the younger sons, as well as, the widows in his family.
4. The first born son was the one who received the “Birthright Blessing”. This meant that they received the blessing of a covenant relationship with the Lord. God dealt directly with the head of the family.