17 But the first-born, son of the hated one, he doth acknowledge, to give to him a double portion of all that is found with him, for he 'is' the beginning of his strength; to him 'is' the right of the first-born.

Matthew Henry's Commentary on Deuteronomy 21:17

Commentary on Deuteronomy 21:15-17

(Read Deuteronomy 21:15-17)

This law restrains men from disinheriting their eldest sons without just cause. The principle in this case as to children, is still binding to parents; they must give children their right without partiality.