Deuteronomy 21:14-16

Holman Christian Standard Bible

¹⁴ Then if you are not satisfied with her, you are to let her go where she wants, but you must not sell her for money or treat her as merchandise,^[a] because you have humiliated her.

The Right of the Firstborn

¹⁵ “If a man has two wives, one loved and the other unloved, and both the loved and the unloved bear him sons, and if the unloved wife has the firstborn son, ¹⁶ when that man gives what he has to his sons as an inheritance, he is not to show favoritism to the son of the loved wife as his firstborn over the firstborn of the unloved wife.