What is the main teaching of this passage about the firstborn son?

This passage teaches that the true firstborn son must receive his proper rights, even if his mother is less loved than another wife. When the father divides his property, he is not allowed to treat the son of the favored wife as if he were firstborn if he was actually born later. The real firstborn is to be clearly acknowledged and given a double portion of what the father has. This keeps the father from using his changing affections to take away what God has already given by birth.

What does “beloved” and “hated” wife mean in this passage?

Here “beloved” and “hated” do not mean the man truly loves one and is an enemy to the other. The wording points to one wife being more loved and the other being loved less. In homes where there were two wives, love was rarely equal and this often led to jealousy and trouble. This passage faces that messy reality and makes sure the children of the less loved wife are not punished or pushed aside because of their mother’s place in the husband’s heart.

What does it mean that the firstborn gets a double portion?

A double portion means the firstborn son receives twice as much of the father’s property as any other single son when the inheritance is divided. For example, if there are two sons, the estate is divided into three shares, and the firstborn receives two of them while the other son receives one. If there are more sons, the property is divided into one more portion than the number of sons, and the firstborn still receives two portions. This honored his role and gave him special responsibility in the family.

Why is the firstborn called “the beginning of his strength”?

Calling the firstborn “the beginning of his strength” shows that this son is the first sign of the father’s growing family and future. Through this child, the father’s house begins to be built up and strengthened. The firstborn is, in a sense, the first arrow in the father’s quiver. Because of this special place in the family story, God gives him the right to a double portion. The phrase explains why the firstborn is honored and why his birthright should not be taken from him without cause.

Could a father ever take away the firstborn’s right in this passage?

This passage forbids a father from taking away the firstborn’s right just because he loves another wife and her son more. Personal preference is not a valid reason to change the birth order. However, elsewhere in Scripture we see that a firstborn could lose his place through serious sin. In that kind of case, his fall is tied to clear wrongdoing, not to his mother being less loved. This law guards against selfish or unfair choices that ignore what God has already set by birth.

How does this passage show God’s concern for justice in families?

This passage shows that God cares about fairness even in private family matters. A father might think he can give his property however he likes, following his feelings toward his wives and sons. God steps in and sets a boundary. He protects the child who could easily be overlooked, the son of the less loved wife, by commanding that his birthright be honored. It reminds parents that their authority is not unlimited and that God defends the rights of those who might be pushed aside.

What problem with having two wives does this law reveal?

This law quietly reveals how messy and painful a home with two wives often became. One wife was usually more loved, the other less loved. That unequal love led to jealousy, hurt, and the temptation to favor one set of children over the others. The fact that a law had to be given to stop the father from cheating the firstborn shows how easily sin enters when God’s pattern for marriage is ignored. The passage does not praise having two wives; it manages the damage that comes with it.

How might this passage speak to parents today about favoritism?

While the exact setting is ancient, the heart issue is still familiar. Parents can be tempted to favor one child over another, whether because of personality, birth order, or the parent’s feelings toward the child’s mother or father. This passage calls parents to be fair and to honor what God has given, not to let shifting emotions or family tensions decide who is treated well. It encourages parents to check their hearts, avoid partiality, and see each child as one whom God has placed in the family.

Deut.21.15

Deuteronomy 21:15

KJV

¶ If a man have two wives, one beloved, and another hated, and they have born him children, both the beloved and the hated; and if the firstborn son be hers that was hated:

Inheritance Rights of the Firstborn

¶ If a man have two wives, one beloved, and another hated, and they have born him children, both the beloved and the hated; and if the firstborn son be hers that was hated:

Then it shall be, when he maketh his sons to inherit that which he hath, that he may not make the son of the beloved firstborn before the son of the hated, which is indeed the firstborn:

But he shall acknowledge the son of the hated for the firstborn, by giving him a double portion of all that he hath: for he is the beginning of his strength; the right of the firstborn is his.

Cross References

No cross references available for this verse.