Deuteronomy 21:15-17

New Life Version

¹⁵ “If a man has two wives, one loved and the other not loved, and both the loved and the one not loved have borne him sons, and if the first-born son belongs to the wife who is not loved, ¹⁶ on the day when the man divides what he has for his sons, he cannot make the first-born of his loved wife the first-born before the son of the wife who is not loved, who is the first-born. ¹⁷ He must respect the first-born, the son of the wife who is not loved, by giving him twice the share of all he has. He is the beginning of his strength and the right of the first-born belongs to him.