Deuteronomy 21:16-18

Darby Translation

¹⁶ then it shall be, in the day that he maketh his sons to inherit what he hath, that he may not make the son of the beloved firstborn before the son of the hated, who is the firstborn;

¹⁷ but he shall acknowledge as firstborn the son of the hated, by giving him a double portion of all that is found with him; for he is the firstfruits of his vigour: the right of the firstborn is his.

¹⁸ If a man have an unmanageable and rebellious son, who hearkeneth not unto the voice of his father, nor unto the voice of his mother, and they have chastened him, but he hearkeneth not unto them;