Deuteronomy 21:15
Deuteronomy 21:15 AMP
“If a man has two wives, one loved and the other unloved, and both the loved and the unloved have born him sons, and the firstborn son belongs to the unloved wife
“If a man has two wives, one loved and the other unloved, and both the loved and the unloved have born him sons, and the firstborn son belongs to the unloved wife