that you might fear Yahweh your God, to keep all his statutes and his commandments, which I command you, you, and your son, and your son's son, all the days of your life; and that your days may be prolonged.

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 firstborn before the son of the hated, who is the firstborn: