Step 2 get a double legacy
Inherit the father's position
Genesis chapter 49
Reuben, you are my eldest son. You were born when I was strong. You should have great honor and power.
But if you indulge your lust and boil like water, you won't be in the first place, because you went to your father's bed and defiled my couch.
Deuteronomy Chapter 265438 +0
15. If a man has two wives, one is what he loves and the other is what he hates, and all he loves and hates have given him sons, but the eldest son is born to the wife he hates.
Yes
16. When the inheritance is given to the son, the son born to the beloved wife is not the eldest son, and the son born to the hated wife is not the eldest son.
Above,
17. It's just that you should recognize the son of your evil wife as the eldest son and give him an extra share of the estate, because this son was born when he was strong.
The birthright of the eldest son belongs to him.
Kings chapter 3.
27. Then, he offered the eldest son who should be king as a burnt offering in the city.