Parallel
Deuteronomy 21:15
Brenton's English Septuagint · Berean Standard Bible
And if a man have two wives, the one loved and the other hated, and both the loved and the hated should have born him [children], and the son of the hated should be first-born;
If a man has two wives, one beloved and the other unloved, and both bear him sons, but the unloved wife has the firstborn son,