Deuteronomy 21:15-18

15 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:

16 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:

17 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.

18 If a man have a stubborn and rebellious son, which will not obey the voice of his father, or the voice of his mother, and that, when they have chastened him, will not hearken unto them:

Deuteronomy 21:15-18 Meaning and Commentary

INTRODUCTION TO DEUTERONOMY 21

This chapter treats of the beheading of the heifer, for the expiation of unknown murder, and the rules to be observed in it, De 21:1-9 of a beautiful captive woman an Israelite is desirous of having for his wife, and what methods he must take to accomplish it, De 21:10-14, of giving the double portion to the firstborn, which he must not be deprived of in favour of the son of a beloved wife, De 21:15-17 and of the stubborn and rebellious son, who remaining so must be put to death, De 21:18-21 and of burying a person hanged on a tree the same day he is executed, De 21:22,23.