Deuteronomy 21:13-15

New Revised Standard Version, Anglicised Catholic Edition

¹³ discard her captive’s garb, and shall remain in your house for a full month, mourning for her father and mother; after that you may go in to her and be her husband, and she shall be your wife. ¹⁴ But if you are not satisfied with her, you shall let her go free and not sell her for money. You must not treat her as a slave, since you have dishonoured her.

The Right of the Firstborn

¹⁵ If a man has two wives, one of them loved and the other disliked, and if both the loved and the disliked have borne him sons, the firstborn being the son of the one who is disliked,