Deuteronomy 21:16-18

Evangelical Heritage Version

¹⁶ then on the day that he bequeaths what he owns to his sons, he cannot declare the son of the loved wife as his firstborn in preference to the son of the unloved wife, who is the true firstborn. ¹⁷ He must acknowledge the son of the unloved wife as the firstborn by giving him a double portion of everything that is recognized as his. Because that son is the beginning of his father’s virility, the legal right of the firstborn belongs to him.

¹⁸ If a man has a stubborn and rebellious son who does not obey the voice of his father and his mother, and they discipline him, but he will not listen to them,