then it shall be, in the day that he causes his sons to inherit that which he has, that he may not make the son of the beloved the first-born before the son of the one regarded inferior, who is the first-born.

But he shall acknowledge the first-born, the son of the one regarded inferior, by giving him a double portion of all that he has, for he is the beginning of his strength. The right of the first-born is his.

If a man has two wives, the one beloved, and the other regarded inferior, and they have borne him sons, both the beloved and the one regarded inferior, and if the first-born son be hers who was regarded inferior,

And it shall be, that the first-born who she bears shall succeed in the name of his brother who is dead, that his name be not blotted out of Israel.