Deuteronomy 21:16

13 And she shall put off from her the raiment of her captivity, and shall remain in thy house, and bewail her father and her mother a full month: and after that, thou shalt go in to her, and be her husband, and she shall be thy wife.

14 And it shall be, if thou shalt have no delight in her, then thou shalt let her go whither she will; but thou shalt not sell her at all for money; thou shalt not make merchandise of her, because thou hast humbled her.

15 If a man shall have two wives, one beloved, and another hated, and they have borne him children, [both] the beloved and the hated; and [if] the first-born 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 prefer the son of the beloved first-born, before the son of the hated, [which is indeed] the first-born:

17 But he shall acknowledge the son of the hated [for] the first-born, by giving him a double portion of all that he hath: for he [is] the beginning of his strength; the right of the first-born [is] his.

18 If a man shall have a stubborn and rebellious son, who will not obey the voice of his father, or the voice of his mother, and [who], when they have chastened him, will not hearken to them:

19 Then shall his father and his mother lay hold on him, and bring him out to the elders of his city, and to the gate of his place;