Deuteronomy 21:17

14 And if you are not pleased with her, you are to let her go wherever she wishes. But you must not sell her for money or treat her as a slave, since you have dishonored her.

15 If a man has two wives, one beloved and the other unloved, and both bear him sons, but the unloved wife has the firstborn son,

16 when that man assigns his inheritance to his sons he must not appoint the son of the beloved wife as the firstborn over the son of the unloved wife.

17 Instead, he must acknowledge the firstborn, the son of his unloved wife, by giving him a double portion of all that he has. For that son is the firstfruits of his father’s strength; the right of the firstborn belongs to him.

18 If a man has a stubborn and rebellious son who does not obey his father and mother and does not listen to them when disciplined,

19 his father and mother are to lay hold of him and bring him to the elders of his city, to the gate of his hometown,

20 and say to the elders, “This son of ours is stubborn and rebellious; he does not obey us. He is a glutton and a drunkard.”